In last night's post I asked for mathematically minded people to give their thoughts on the outcome and on my analysis of it. This generated an interesting response from Pete, whom I forgive for his gentle jibe at the sporadic nature of my blogging :-), which is well worth a read.
One of the points Pete makes is with regard to the returns from the three scorelines:
your profit over the different outcomes isn't uniform, currently if you get 75% of your winners at 1-1 you'll win far more than if you get 25% of them at 1-1. Had all your winning matches finished 2-1 to the home side you would have finished with a £7.20 profit, had they all been 1-1 you would have made £110. As it is by betting on all 6 games you would have made £62 not the £10 quoted (I believe you averaged rather than summed the games) From Qualifiers only it was £27 profit.The reason I stake the SG at multiples of 5 and 2 if trading the game is because the key to the SG as a trade is the 1-1 scoreline, so I want a larger profit on that to provide me with options after the first goal is scored. As a set and forget, would it better to adjust these stakes? Dutching them, to give an identical profit across all three is an option, and on the average odds used in the Prem games would have given an even profit of £23 bar a few coppers. That would have resulted in less profit than was actually generated (£42 against £62).
Some basic research on www.soccerstats.com confirms that in all the major leagues 1-1 and 2-1 are much more frequent results than 1-2 so after playing around a bit with the stakes I have concluded that a better way to stake this as a set and forget would be £4 on 1-1, £3 on 2-1 and £2 on 1-2 (or multiples thereof).
Pete also refers to the issue of match selection:
I think the main issue before you can contemplate an edge is game selection obviously blindly backing 1-1, 2-1 and 1-2 in either every game or game with teams who are close in the markets isn't going to work. As you're rulling out straight away games like man utd on the road where they do tend to draw alot (50% of matches last season) yet will likely be an odds on favourite.Hard to argue against that! When trading the SG, particularly in the top leagues, I would rarely ignore some odds on favourites. In the prem, I wouldn't ignore ANY of them - the league is so competitive now that 1-1 is frequently hit at some point during the match and provides options even if the final score represents a rout!
With my trading hat on, when I first started playing around developing this, I researched the games thoroughly. I looked at the form, head to heads and the prices on M/O, CS and the goals markets on Betfair prior to deciding whether or not to enter a trade. I rarely bother now! Using such small stakes together with various other enhancements (for example scalping some 0-0 cover pre match and entering the U2.5 goals market immediately after a goal to get cover - live example as I type, Kilmarnock 1-0 against Hibs after 3 minutes - entering U2.5 at 3's) means this trade is so generally successful that I can afford the odd wipeout.
I am now confident and comfortable enough with the SG that given relatively evenly matched teams (even if I've never heard of them or know little about their respective recent form, league positions, team selection or anything else for that matter) and decent liquidity I will enter a trade.
Going on from here this is what I'm going to do, again as a paper exercise. With neither team below 2 or above 4 in match odds I will paper 'punt' the SG scorelines. I'm not patient or motivated enough to look up the CS odds so will use 7.2 for 1-1, 12 for 1-2 and 10 for 2-1 as the odds, staked £4 on 1-1, £3 on 2-1 and £2 on 1-2. Just for fun..... unless the results start suggesting otherwise....
As an aside I entered U2.5 in the Killie game at 3 and got out at 2.84. It is now 1-1, after 18 minutes so I've exited the trade for a small loss on 1-1 and small greens on the other two. The goals came too early in this instance, but a profit ensues. 1.01 the bloody game ends 1-1 now!
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