Originally Posted by
suicidekings
The assumption that the books are consistently giving you value on home favourites is a horrible one, generally speaking. They don't tend to do that for any sport. And seeing as you have no idea what the fair line is for any of these games, you have no basis for comparison as to whether you're getting a good price or not.
Based on the numbers you gave (243W, 117L, +$61.27), and assuming you're flat betting to win $5 per game, your average odds bet are -197. That's a breakeven win % of 66.33% and your win rate is 67.5%. Being up $61.27 is fine, but remember you've wagered 360 * $5 * 1.97 = $3546 to get it. Standard deviation for your dataset as listed above is $67.7 and your Z-score is 0.905, so you're operating well within expected variance. Kind of like flipping a coin, getting a few more heads than tails and calling it a profitable system...