But Teagarden, who is 0-for-18 with 13 strikeouts on the season, could also be headed for Triple-A Oklahoma City once Jarrod Saltalamacchia is activated off the disabled list.
"We need to get Salty healthy and then we'll address the rest of it," general manager Jon Daniels said before Wednesday's game.
But it's clear the Rangers have grown enamored with Treanor, who went into Wednesday's game 6-for-18 in five games behind the plate.
"Matt has played very well," Daniels said. "He brings a little toughness to the position."
Saltalamacchia was 1-for-4 as Oklahoma City's designated hitter on Wednesday afternoon and is 1-for-6 on his rehab assignment. He is scheduled to start at catcher and play seven innings on Thursday. After that, the Rangers want him to catch back-to-back nine inning games on Friday and Saturday. Then he'll be reevaluated.
T.R. Sullivan is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.