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Sunday
Jul262009

An Honourable (Near) Draw

Investors with the Recommended Portfolio should probably be thankful that they escaped the weekend with just a small loss (0.4%), leaving them still up 4.0% on the season. Melbourne's inability to beat the Swans was the cause of most damage, though the Dons' narrow failure to pip the Tigers didn't help, nor did Freo's inability to cover their 8.5 point spread.

Other Investors lost too, MIN#001 and MIN#015 also only narrowly, and MIN#002 a little more substantially. MIN#017 was the only Investor to show a profit on the weekend. MIN#001 and MIN#015 are now up 7.2% for the season, MIN#002 is up 31%, and MIN#017 is up 38.5%.

Two Funds made profit on the weekend. New Heritage made almost 7% from 5 successful bets out of 6, leaving it ahead by 38.5% on the season, such profit deriving from 50 successful bets out of 66 wagers. Line Redux made 4% from its 2 out of 3 performance, leaving it down just over 1.5% on the season based on 25 successful wagers from 49 bets.

Prudence landed 4 bets from 6 but dropped 1.5% and is now up a little over 12% on the season with a 47 from 63 record. Hope won 1 and lost 1 to drop 4.4% but remains 31% ahead on the season with a 10 from 22 record. Chi-squared landed 3 from 4, but lost the one that mattered and so dropped 8% on the round to move to a loss of 55% on the season due to just 12 successful wagers from 25.

On tipping, BKB had the best performance of the round, snaring 7 from 8 to move to 95.5 from 136 (70.2%), joining Shadow on that score thanks to Shadow's paltry 2 from 8 for the week. Silhouette managed 5 from 8 and continues to lead, now by just 3 tips on 98.5 from 136 (72%).

Chi and ELO both had unremarkable line betting weekends, each bagging 4 from 8.

Chi continues to threaten the 30 points per game Mean Absolute Prediction Error (MAPE) landmark. He's now on 30.2 points per game; ELO's on 28.1 and BKB's on 27.2. As a measure of margin-tipping accuracy, MAPE is a good one, though it is subject to the distorting influence of a view blowout results. A measure that is less susceptible to such results, and one that is therefore preferred by some as a measure of margin-tipping accuracy is the Median Absolute Prediction Error.

For Chi, this measure is 26 points, for BKB it's 23.5 points, and for ELO it's 21.5 points, highlighting just how accurately ELO's been tipping margins this season.

Over on MAFL Stats you can view the latest MARS Ratings and there you'll see that the Saints have grabbed the number 1 ranking from the Cats for the first time this season. Given the Cats' patchy performances over the last month, I think that's probably a fair assessment.

A team-by-team comparison of results also highlights the Saints' superiority, especially against teams higher on the ladder:

In this table results in green are victories and those in red are losses. Where a team is to be played in a future round the details are shown in black. The teams are ordered by current ladder position.

Thursday
Jul232009

21 Again

Tonight I thought I'd wait a little longer to see if TAB Sportsbet would post the final 2 line markets before I wrote this blog but, as of a little after 8pm, they've not.

The two line markets awaited are those for the Carlton v Collingwood game, on which I don't expect we'll have a wager, and for the Fremantle v West Coast game, on which I expect we will. This week's Ready Reckoner is based on us having 5% of the Line Redux Fund on Freo, probably giving 9.5 points start. I'll confirm this as soon as I can.

Including the assumed Dockers wager, we'll again have 21 wagers this weekend, though Chi-squared's marginally more temperate behaviour means that Investors will have, in aggregate, less money at risk.

New Heritage has 6 wagers totalling about 55.5% of the Fund, the largest being a 12.7% wager on the Lions at $1.13. The other 5 wagers are each sized 9.2% or larger and are on favourites, the longest priced of which is Fremantle at $1.60.

Prudence also has 6 wagers, totalling almost a quarter of the Fund, and also has its largest wager - 6% in its case - on the Lions. Its most speculative wager though is on the Dees and is for 3.1% at $2.40. (The Dees have blown significantly since we placed this bet, which is rarely a happy portent.)

Chi-squared has found 4 wagers totalling a little over 25% of the Fund. It too fancies the Dees - if 14.6% can rightly be labelled merely a fancy. Its 3 other wagers are on favourites.

Hope has just 2 bets this weekend, 4.9% on the Dees at the aforementioned $2.40, and 1% on the Crows at $1.50.

Line Redux has 3 bets (including the prospective Freo wager), all on teams giving start.

Every Fund has wagered something on the Crows this weekend, making them only the second team this year - the other being Sydney - to earn such unamimous wagering support. There's some proverb about eggs and baskets that I can only vaguely recall at this point.

Here then is the weekend's Ready Reckoner:

It's a dark weekend indeed when your fate is in the hands of the Dees, especially when draft picks are at stake.

Next, let's turn to tipping, where we have:

  • Carlton 9-4 favourites over Collingwood. Though the Pies have scant support, 3 of their 4 supporters come from amongst our top 5 tipsters in the form of BKB, CTL and Silhouette. ELO tips Carlton, but only by 2 points, making this its Game of the Round.
  • Geelong 8-5 favourites over the Hawks. Amongst our tipping elite, only Shadow is on the Hawks. Chi's tipping a Cats victory, but only by 3 points, making this his (only!) Game of the Round.
  • Fremantle 7-6 favourites over the Eagles, with CTL, Shadow and Silhouette all tipping the Eagles.
  • Brisbane unanimous favourites over the Roos.
  • St Kilda, perhaps surprisingly, unanimous favourites over the Dogs.
  • Melbourne 7-6 favourites over Sydney, with BKB and CTL the only credentialled tipsters foretelling a Swans victory.
  • Essendon 10-3 favourites over the Tigers. STM II stands alone amongst its peers in tipping the Tigers.
  • Port Adelaide 7-6 favourites over the Crows, with half of the Crows' support coming from CTL, BKB and Silhouette.

On line betting, assuming Freo give 9.5 points start and Carlton receive 6.5 points start (which, as I type this, is no certainty):

  • Chi's on Collingwood, Hawthorn, Fremantle, the Kangaroos, St Kilda, Melbourne, Richmond and Adelaide
  • ELO's on Carlton, Hawthorn, West Coast, the Kangaroos, St Kilda, Melbourne, Essendon and Adelaide

Update on Friday morning: Fremantle line wager is confirmed. We're giving only 8.5 start. Also, as expected, no Carlton line bet. New Round Summary now available for download.

Sunday
Jul192009

Sometimes, Seven Goals Just Isn't Enough

You might think, if you'd wagers on three teams (albeit outsiders) that led by 8, 7 and 42 points at half time, that at least one of them would take home the biscuits, especially the one that led by 42 points. If you'd thought this over the last weekend, you'd be wrong.

The Dons were the first of the disappointments, leading the Dogs by 8 points at the half only to concede 11 goals in the second half to go down by 33 points. Next came Fremantle, who enjoyed a 7 point buffer at the half and who maintained legitimate hopes until late in the final term only to falter in the wet against the Lions and lose eventually by 15 points.

Then, on Sunday, the Tigers, who led by 7 straight goals (yes, 7) at the half, barely managed to cling on for a draw, which was enough to stop Investors losing a great deal on the game, but wasn't enough to provide them with a profit. In draws, head-to-head wagers pay out at half-price, so teams at prices below $2 pay back less than the amount wagered. Investors had the Tigers at $1.95.

Indeed it was a weekend littered with close finishes for many Investors. The Cats lost on line betting by half a point, Freo won on line betting by two and a half points, and Port won on line betting by a point and a half. Still, most Investors would've swapped those two favourable line betting results for a Tigers head-to-head victory.

In total, New Heritage won 4.5 of 6 wagers and fell 3.3%, Prudence won 4.5 of 7 wagers and fell 4.2%, Hope lost its only bet and fell 5.5%, Chi-squared won 0.5 of 3 wagers and fell a precipitous 33.3%, and Line Redux won 2 of 4 wagers and fell 1%.

As a result, the Recommended Portfolio fell 9.4% to leave it just 4.5% ahead for the season. Other Portfolios fell by between 3.3% and 9.5% to leave them in front for the season by amounts ranging from 7.5% to 35.4%.

On tipping, RYL had the best possible round, landing 7.5 from 8. Silhouette and Shadow bagged 6.5 and 5.5 respectively to jointly lead outright on 93.5 from 128 (73%), 5 tips ahead of BKB on 88.5 from 128 (69%) and a further tip ahead of CTL and STM II on 87.5 from 128 (68%).

Level-stake, home team only, start at Round 6 wagering on the heuristic tipsters has now been profitable for all tipsters except ELO, Chi and HSH. Shadow, Silhouette and STM II are currently up by over 11 units using such a wagering strategy - if only we'd known ...

Chi's and ELO's line betting results were once again poor this weekend, with Chi scoring 3 from 8 and ELO just 2 from 8.

All told, a weekend best forgotten.

Thursday
Jul162009

Clutch Betting

The English language has many wondrous, often euphonious collective nouns ready to serve as descriptors for sets of objects, especially animals. So we have, for example, an exultation of larks, a murder of crows, a gaggle of geese, a cloud of bats, a flutter of butterflies, a cackle of hyenas, a smack of jellyfish, a deceit of lapwing, a richness of martens, a parliament of owls, a watch of nightingales and - a personal favourite - a prickle of porcupines.

English lacks, however, a collective noun for a group of bets, a deficiency I feel needs to be remedied. Accordingly, I'm nominating the word 'clutch' for this purpose.

Its appropriateness can be argued on a number of fronts.

Firstly, the word clutch evokes images of an anxious punter, betting slips gripped tightly in hand, attention riveted on a large screen that's beaming the performance of some two- or four-legged determiner of his or her fate. Surely such a punter can be said to be in the clutch.

The word's also evocative of the notion of 'clutching at straws', a desperate and generally futile exercise, which can seem an especially apposite metaphor some weekends.

Further and more positively, the term 'clutch' already has a sporting pedigree as an honorific applied to the exalted few who can be expected to perform when it matters - hence 'clutch' putter, 'clutch' hitter, 'clutch' pitcher and, more generally, 'clutch' player.

Clutch it is then.

This weekend Investors most certainly face a clutch of bets, 21 in all for the second weekend in a row, and 8 of them on underdogs priced as high as $3.

Chi-squared's own clutch is the scariest. Three bets totalling over 44% of the Fund, the two largest on Essendon and Fremantle both at $3 and both facing teams that are fighting for top 8 and possible top 4 positions. The remaining bet is on Richmond, also the underdogs, but they're only at $1.95 and the bet is relatively small.

New Heritage is also putting a large proportion of the Fund at risk - just under 63% of the Fund on 6 teams, all of them favourites and all but one of them home teams. The largest wager is just over 13% of the Fund on Geelong at what others might call an unbackable $1.04. The smallest wager is just over 2% on the Roos at $1.80 away to the Tigers.

Prudence, as has been its habit for most of the season, has this week nibbled on a smorgasbord of teams rather than gorging on just a few. It has 7 bets totalling a little over 30% of the Fund, 2 of them on underdogs and including a surprising 2% wager on the Dons at $3. The largest wager is for a trifle under 7% of the Fund on the Cats at $1.04.

Line Redux has four wagers representing 20% of the Fund. Two of these wagers are on favourites (Geelong and Port Adelaide) and the other 2 are on underdogs (Essendon and Fremantle).

(There is still one line market to be posted - that for the Tigers v Roos clash - but I don't expect we'll have a bet in it.)

Hope, whose selectivity has been its hallmark this season, has only 1 bet this week, its 20th of the season and its 6th on the Dons. It has 5.5% of the Fund on them at $3.

Together these bets yield the following Ready Reckoner:

The entire tenor of the weekend will be established late on Friday night for all Investors except MIN#017, though even a Dons win won't make the weekend entirely pot-hole resistant.

Next we move to tipping where we find:

  • Essendon are 8-5 favourites over the Dogs. Amongst our top 5 tipsters, Silhouette, BKB and CTL have sided with the Dogs, while Shadow and STM II (along with a cadre of anxious MAFL Investors and a badly-bred Pomeranian) are riding the Don train. Chi could definitely be more convincing in his Dondom - he has them as only 1 point winners making this game one of his two Games of the Round.
  • Carlton are unanimous favourites over the suddenly unpopular Swans.
  • Geelong are 8-5 favourites over the Dees, the narrowness of their favouritism due mostly to the shortness of the memories of many of our heuristic-based tipsters. Amongst the cream of these tipsters, only Shadow and STM II are lining up behind the Dees in what will surely be the shortest of queues.
  • Collingwood are 8-5 favourites over the Hawks. Once again it's only Shadow and STM II from the top 5 tipsters who are supporting the underdogs.
  • Brisbane are 11-2 favourites over Fremantle, the sole support for the Dockers coming from HSH and Chi, who has this as his second and final Game of the Round.
  • Port Adelaide are unanimous favourites over the Eagles.
  • The Roos are 8-5 favourites over Richmond. The Tigers' following amongst our top tipsters is thin: only STM II is in their corner. ELO is another Tigers tipper, though only by 6 points, making this its Game of the Round.
  • St Kilda are 11-2 favourites over the Crows, with EI I and II the only ornithologists amongst the MAFL tipsters.

On line betting, ELO will surely improve on its 0 from 8 record last weekend, though I'm not as certain that Chi will better his 3 from 8 performance. This week:

  • Chi's on: Essendon, Sydney, Melbourne, Collingwood, Fremantle, West Coast, Richmond and Adelaide.
  • ELO's on: Essendon, Sydney, Geelong, Collingwood, Brisbane Lions, West Coast, Richmond and St Kilda.
On Line Betting this year teams receiving start have fared much better than those giving it. The current tally is 69-51 in favour of the teams receiving start. The teams with the best records when receiving start are Carlton (4-0), St Kilda (3-0), Brisbane (4-1), and West Coast (8-3). Those with the poorest records when giving start are Fremantle (0-4), West Coast (0-4), Hawthorn (1-11), Port Adelaide (3-6), Adelaide (2-4), Sydney (2-4), Geelong (6-9) and Carlton (4-7).

One last statistic before I go. Which teams do you think have the best and worst win-loss records this year in games that have been decided by fewer than 12 points?

Three teams have perfect records: Essendon (2-0), St Kilda (2-0) and Adelaide (1-0). The Hawks (3-1) also have a strongly positive record. The worst, or perhaps the unluckiest, team in these situations has been Carlton (1-4), followed by 5 teams - Collingwood, Port Adelaide, Richmond, West Coast and the Western Bulldogs - all with 1-2 records.

No team has failed to register at least one result where the margin of victory or defeat has been 11 points or fewer.

Sunday
Jul122009

Favourites Stumble While (Most) Investors Profit

When you lose your first 9 wagers of the weekend and when you've a strategy built around favourites and half of them lose, you're not really entitled to expect to profit from such a weekend, especially when such profit is largely dependent on the team that's at the foot of the ladder toppling a team vying for a spot in the finals and the major wager on that team is one that's been placed by a canine whose to-do list comprises sleep, eat and beg for pats in varying orders.

So, it's with some relief that I report that the Recommended Portfolio and all but one Investor finished in the black this weekend.

Three Funds declined: New Heritage, which won 3 of 5 bets but declined by just under 10%; Prudence, which landed 4 from 6 bets but fell by 1%; and Line Redux, which was right only 1 time in 3 and consequently fell 5.5%. The two successful funds were Hope, which was right 2 times in 3 and rose almost 8%, and Chi-squared, which picked 2 from 4 but rose almost 19%, ensuring that Chi gets fed for another week.

In total that left the Recommended Fund up about another 1.5% and other portfolios up by amounts ranging from 1% to 8%, the only exception being the portfolio of MIN #017, which is down by almost 10% this week though still up almost 35% across the season.

On tipping, Shadow led the way with 6 from 8, propelling it to outright lead on 88 from 120 (73%), now one tip ahead of Silhouette in 2nd and a remarkable 6 tips ahead of BKB on 82 in 4th. Never have the bookies seemed so fallible.

On level-stake, home team only, starting in Round 6 wagering (one day I'll come up with a neat shorthand for that), all but one tipster, ELO, remain profitable.

Indeed, ELO posted something of a record this weekend, landing no line bets at all, three fewer than even Chi managed. Still, line betting based on ELO margin predictions would have been profitable across the entire season, albeit now only by 2.57 units. ELO still has an impressive MAPE of 28.2 points per game, just 0.3 points behind BKB and 2.3 points ahead of Chi.

Fremantle's capitulation to the Crows on Saturday shouldn't go unremarked. Freo recorded just 8 scoring shots (7 of them behinds) to Adelaide's 35, meaning that Freo registered only 19% of the scoring shots in the same. In the entire history of VFL/AFL, spanning more than 13,500 games, only 76 teams have kicked a smaller proportion of scoring shots, and only 3 have done so in the seasons from 1980 onwards. Oddly enough, the most recent of these was this season - in Round 5 when Geelong thumped the Lions 18.18 to 5.3. Prior to that, you need to hark back to Round 13 of 1996 when Geelong beat Fitzroy 25.16 to 6.3. Before that you need to return to Round 14 of 1981 when a wayward Carlton thumped Footscray 15.25 to 5.4. So, truly an historic occasion, though not one you'd expect Dockers fans to commit to memory.