Couple of things here. Look at Matsui's walks. That's nice.
Look at how Chris Johnson is raking with the extra-base hits. Also look at how he has struck out in 28% of his ABs. Also note 61K:29BB. Take Johnson out of the equation and you have 47K:23BB. There are five Astros in the lineup whose OBPs are over .370. That's nice, too.