Basically, you really need a lot of bets in order to have a representative sample. Some years Pre-Game bets perform quite bad while crushing live betting. A lot of it comes down to short-term variance. This year was quite exceptional on pre-game bets. There also are only that many games so being active in all different markets is needed and I'm quite confident that I'm having a profit expectation on all of them as the longer-term chart indicates.