The Olney Hypothesis--"Water Torture" Offense

A recent chat with Olney went as follows:

"Clint (San Anselmo, CA): How is it that the A's are doing what they're doing offensivley? Nobody has eye popping numbers, and they certainly aren't manufacturing runs, so how are they statistically the best offense in the last couple months?

SportsNation Buster Olney: (11:38 AM ET ) Clint: Here's the most underrated part of the Oakland offense -- they don't strike out. I don't have the numbers right in front of me, but I believe they have the fewest strikeouts in the majors, along ranking among the leaders in OBP. It's not a dynamic offense, but it's a solid water torture offense that seems to put a lot of steady pressure on the defense. As long as Crosby and Chavez stay healthy and anchor the lineup, maybe that's enough -- especially with the starters throwing up zeros every time out. "

Olney's hypothesis for the A's offense is provocative and suggests more than just  high OBP in accounting for the A's offense success.  To be short, it implies that part of the success of the A's offense is that it puts the ball in play, therefore making the opposing defense make plays.  

My question is, is there a way to measure this statistically?  One way might be a statistic like "Errors Against."  Does anyone know where to find that info? Another way is the BABP (Batting Avg. on Balls in Play).  

Does anyone have any thoughts on other ways to Confirm Olney's hypothesis?