"At that spot, he can still do the same things that Michael does. He can a steal base. He's a veteran, and this is Michael's first time going through (a prolonged slump). He's sometimes not sure of what he wants to do and how he wants to do it, and this takes the pressure off and lets him just hit and be himself."

Bourn entered Monday in a 4-for-30 slump before going 1-for-4 with a double and a run scored.

"He's got to get on base for us to be successful," Cooper said. "That takes the pressure off him a little bit and allows Matsui to do what he does. He's not going to change his game, though. If we get Michael going, we can always make the change."

DIAMONDBACKS 5, ASTROS 3: The Astros were retired in order in seven of nine innings and dropped their third game in a row on the heels of a six-game winning streak. They left the bases loaded in the fifth when Kaz Matsui popped out and Michael Bourn struck out, and Lance Berkman struck out to end the eighth and strand a runner at second. Chris Sampson gave up seven hits and five runs in 4 1/3 innings, but the bullpen held Arizona hitless over the final 3 2/3.