Detroit 76% - Bonderman has been dominant for a while now, and it is not a mirage. Kansas City has been better of late, especially offensively, but Bonderman is likely to shut them down. Duckworth has had some reasonable starts so far, but his best outing is probably equal to Bonderman's worst. Even in that case, Detroit will have a solid edge with their bullpen and home field advantage.
Houston 53% - Oswalt is more likely to throw a dominant game here than Willis, and the Houston lineup might get an immediate boost from Huff, who has been hitting well of late, replacing Ensberg, who has been terrible since mid-June. If they can produce a few runs vs Willis, Oswalt will likely go deep enough to keep Houston's iffy pen exposure to a minimum.
Boston 71% - Loaiza has been consistently hit by weak lineups in pitchers' parks recently, and now faces Boston at Fenway. This is obviously not a good spot for him. Lester has been effective so far in the majors, and he will likely be staked to a solid lead here. He is likely to have another quality start.