It looks like the A.L. R.O.Y. will come down to 2 players, Joba Chamberlain and Evan Longoria. The early favorite is Longoria since Joba only has a 4-3 record and spent a part of the season as a reliever, but I also think Chris Davis will be part of the conversation once the end of September rolls around. I've filled out an Excel sheet with stats from both Longoria and Davis, and I'll be tracking both of them through the end of the season. While I won't have charts for Joba (it's a bit useless to compare a pitcher's stats to a hitter's stats on the same chart), I will post his stats as season totals.
So, here it is.
84.1 IP, 4-3 record, 2.41 ERA, 99 K, 34 BB, 1.21 WHIP
408 PA, 21 HR, 27 2B, 2 3B, .279/.352/.536/.887
129 PA, 11 HR, 9 2B, 1 3B, .295/.333/.656/.989
As you can see, I've added a trajectory line for Davis and Longoria's home run totals. If they stay on their current paces, Davis might end up with just 4 or 5 fewer home runs than Longoria.