OAKLAND -- Rangers reliever Mark Lowe is unlikely to be ready for the playoffs after being diagnosed with a Grade 2 (medium) strained left hamstring. Lowe was examined by Dr. Keith Meister in Arlington on Thursday.
Lowe received a blood platelet injection on Thursday to help speed up the recovery, but the Rangers are preparing for the possibility of him not being ready for the playoffs. Nelson Cruz and Adrian Beltre both missed several weeks with a strained hamstring muscle.
"It definitely puts his availability in doubt, but he just got the injection, so we'll go from there," general manager Jon Daniels said. "Let's wait and see how he responds. Short relievers are different than everyday players."
Lowe strained his left hamstring working out before Wednesday's game running wind sprints in the outfield.
"It was his normal workout," Daniels said. "He has never had a hamstring injury before. It was a freak thing."
The injury will likely have a significant impact on the composition of the Rangers' bullpen.
"You are always concerned when somebody gets hurt," manager Ron Washington said. "But as this team has always done, when somebody goes down, somebody else has to step up."
Lowe, who is 2-3 with a 3.80 ERA in 52 games, was expected to be part of the Rangers' postseason bullpen along with closer Neftali Feliz, right-handed setup relievers Mike Adams and Koji Uehara and left-handed relievers Mike Gonzalez and Darren Oliver.
The Rangers are also expected to add Alexi Ogando to the bullpen for the playoffs because they are going with a four-man rotation. That makes seven relievers, and they may add one more from a group that includes right-handers Scott Feldman, Yoshinori Tateyama and Darren O'Day and left-hander Mike Kirkman. If Lowe is unable to go, the Rangers will likely choose one more from that group.