Andres Torres will reclaim the centerfield and leadoff spots when he rejoins the Mets in Houston Monday, Collins said.
Torres has been on the disabled list since re-injuring his left calf on Opening Day. Kirk Nieuwenhuis will shift over to left for most games, giving the Mets an all-lefthanded-hitting outfield until Jason Bay returns from the disabled list.
Scott Hairston will spell one of the three against some lefties, Collins said. The Mets will face two in the three games in Houston: J.A. Happ on Tuesday and Wandy Rodriguez on Wednesday.
Torres, who had 19 stolen bases in 25 attempts for the Giants last season, will give the Mets a dimension they currently lack. They have six stolen bases, with Wright the team leader with two.
Nieuwenhuis had three hits Sunday, including an RBI double in the 10th, and is batting .316. He also made a diving catch in left-center to rob the Rockies of a run in the fifth.
He has never played left before, but Collins said: "They hit fly balls to left, too. He can make those catches out there."
Zach Lutz was sent to Triple-A Buffalo to make room for Torres.