Looks like the patch should be out by tomorrow morning sometime for 360 owners. Pretty big fix list.
MLB 2K10 Patch Notes - 360 to be released 3/16 before 5 AM PST per MS - 2K Sports Forums Pretty excited. Says the next patch should be out by end of April..
Check swings and pitcher fatigue issue will be fixed in tomorrow's patch. No more playing my player and seeing the opposing starting pitcher have 140 pitches against me.