According to BaseballMonster.com, from July 1 to July 31, the top 10 hitters were:
Abreu
Holliday
Rollins
Lee, D
Ludwick
Jones, Garrett
Morgan, N
Utley
Willingham
Victorino
Abreu dominates in their ranking system---leading the top 10 guys in both RBI and Runs, while batting .380 (and tossing in 5 SBs and 4 HR) Among the top 10 hitters, Willingham was next to last in Runs and in the bottom half in both SBs and Average (albeit with a nice .330...but he can't compete with the .380s and the .412 from Holliday)
Include pitchers, and Wandy and Wainwright sneak into the bottom half of the list, bumping Willingham and Victorino out.