HOUSTON -- Astros veteran Jesus Guzman left Friday's 3-1 win over the Blue Jays after four innings with back spasms. There was no immediate indication of how long he'll be out.
Guzman, who rarely plays, started at first base and was 1-for-2, including a game-tying RBI single in the fourth. He was removed from the game shortly after and replaced by Jon Singleton, who normally starts at first but was sitting out against a lefty.
"His back just tightened up on him," manager Bo Porter said. "It's a back spasm. It's something that happened in the flow of the game and at that point there was nothing we could do. WE had to go ahead and get him out because he could barely move, so the trainers are going to look at him at have him evaluated. We'll have more information tomorrow."
Guzman is hitting .200 with two homers and eight RBIs in 60 at-bats. Friday was his 36th start of the season.
The Astros have been hit hard by injuries of latel and have several key players, including outfielders Dexter Fowler (intercostal), George Springer (quad) and Alex Presley (oblique) on the disabled list. Reliever Josh Zeid is set to have season-ending foot surgery.
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.