This is Martin's third season in professional baseball and he has already played more games than in his two previous seasons. Martin has played in 109 games this season after injuries limited him to 79 games last year at both the Major and Minor League level, and 81 in 2011.
"I have been working hard," Martin said. "My body feels perfect."
Martin was 1-for-11 with three strikeouts in his three previous games. Prior to that, he hit .299 with 10 runs scored and eight stolen bases in a 19-game stretch. Gentry was in the leadoff spot for the Rangers on Sunday for the first time this season.
T.R. Sullivan is a reporter for MLB.com. Read his blog, Postcards from Elysian Fields, and follow him on Twitter @Sullivan_Ranger. This story was not subject to the approval of Major League Baseball or its clubs.