Alex Rios undergoes MRI exam

ARLINGTON, Texas -- Rangers right fielder Alex Rios underwent a MRI on his sprained right ankle Monday afternoon.

Rios, who was taken out of Sunday’s game against the Houston Astros after re-aggravating the injury sliding into home plate, wasn’t in Monday’s lineup against the Tampa Bay Rays.

“You can say it’s frustrating,” said Rios, who first injured the ankle July 19 in Toronto. “We’ve gone through too many injuries and I’ve experienced one myself, I wouldn’t call it an injury. I would call it more pain than anything, I think. It is frustrating to go through all these kinds of things and we’re going through it, it's part of the struggle.”

Rios said he doubts he’ll go on the disabled list, but it’s ultimately not his decision.

Rios' absence from the lineup has forced manager Ron Washington to juggle things between his corner outfielders.

Left fielder Shin-Soo Choo has been nursing a sore left ankle since April and he’s been limited to playing right field and DH.

Washington is also using Daniel Robertson and Jim Adduci in left field when Choo is in right or at DH.

Newly acquired Mike Carp can play both corner outfield spots, as well.

“One of them is constantly playing,” Washington said in reference to Choo. “We have to see on Rios, we don’t know. I hope it’s a couple of days and he’ll be back out there. If not we’ll make an adjustment, it’s all we can do.”

Bullpen working hard: The Rangers bullpen pitched four scoreless innings in Sunday's win over Houston. Roman Mendez (one inning) Shawn Tolleson (two innings) and Neftali Feliz (one inning) provided the relief for starter Nick Martinez, who earned just his second win of the season.

"That was awesome, that first inning was as clean and crisp as I've ever seen him," Washington said of Tolleson, who threw 24 pitches. "And he went out in the second one and did a good job in the second inning. That was nice, that's what you like to see."

Washington said he wanted Mendez to get two innings of work, but couldn't because he threw 24 pitches. The big picture for Mendez and Tolleson is for each to throw multiple innings without throwing a ton of pitches to achieve it.

"You certainly like to have that flexibility," Washington said. "At times they do that and sometimes they get a little erratic with their command. It's important they are able to be multi-innings guys for us."

Carp getting better: Carp left Saturday’s game with tightness in his left groin and was unavailable for Sunday's contest at Houston. Carp said he felt better Monday and is available to pinch hit and play the field. Washington doesn’t want to use the left-handed hitting Carp against left-handed pitching. Lefty Drew Smyly is Tampa Bay’s starter on Monday. In the next three games, the Rays will employ right-handers.

Base Hits: Over the weekend, the Rangers hosted the RBI World Series Championships. Jackie Robinson RBI of Jersey City, N.J. won the senior division and the Miami Marlins RBI won the junior division. ... The Rangers are 6-9-3 in 18 home series this season.