Thanks for the input on this. It's such a minor thing I wasn't sure if it should have been brought up, but I'm glad I did.
I do have the most recent patch but I believe the league was started with the first WIP patch, so I don't think I should bother Markus with the league.dat. The problem is that it'd be such a tough thing to replicate.
M's Rule - He was 3 for 3 with two homers and five RBI, so that does seem like it would be good enough to win the award according to the formula you were alluding to. It's a low homer/high batting average league so the two homers may also have been close to the high total for the week. He had a great game, but Player of the Week? I don't know...
I did a quick Google search and couldn't find any AB minimums for Player of the Week. If there is one, I'm sure it's more than 3 AB.