ARLINGTON -- To make room for Alexi Ogando to return from the paternity list, the Rangers placed Andres Blanco on the 15-day disabled list Tuesday.
Blanco pulled a muscle in his back after his return from a sore back, which landed him on the disabled list on July 8.
"It's been there, it didn't just pop up," Rangers manager Ron Washington said. "It's not the bone this time. He was [healthy] when he came off the DL. I don't know if what put him on the DL caused what's happening right now. We've got to get him right."
Blanco said that he may have sustained the injury by overcompensating for his injured back.
"I don't think I'd be able to play every day if I needed to," Blanco said. "It's bad for me, but I need to be honest with the team."
Blanco played as a defensive replacement on Monday, so the trip to the disabled list cannot be retroactive and begins in full on Tuesday.
Craig Gentry's rehabilitation stint must come to an end after Tuesday's game at Triple-A Round Rock, as he is mandated 14 days before he either has to be reinstated or placed on the 15-day disabled list.
Washington hinted that the team was not planning on having eight relievers on Wednesday.
Darren O'Day or Yoshinori Tateyama could be optioned back to Triple-A, or Scott Feldman could be placed on the 15-day disabled list due to a blister that popped up on Friday to make room for Gentry.