ARLINGTON -- Kameron Loe is starting to raise his stock again with the Rangers, but that didn't keep him from being optioned back to Triple-A Oklahoma on Saturday.

Loe, who pitched 4 1/3 scoreless innings in Friday's loss to the Tribe, was sent down to make room for Brandon McCarthy, who was recalled to start Saturday. Loe was sent down because he won't be available to pitch again for the next couple of days, but he is expected to return in September when the rosters are expanded.

"He's done a great job," manager Ron Washington said.

The right-handed Loe made two appearances in long relief since being called up last Saturday. He posted five scoreless innings Sunday against the Rays.

Loe has made the adjustments that the Rangers want Luis Mendoza to make. Both rely on a power sinker and have struggled to complement that pitch with their breaking ball and changeup. Loe has made progress in doing that, and Indians manager Eric Wedge said he did a good job keeping hitters off balance Friday night.

"He's shown he can throw his offspeed pitches when he's behind in the count and early in the count," Washington said. "The adjustments he needed to make, he's made."

The Rangers have begun to talk about who else might be called up in September when rosters expand. The most obvious callup will be outfielder Nelson Cruz, who is hitting .341 with 37 home runs and 98 RBIs in 101 games at Oklahoma.

Cruz was sidelined for three weeks with a strained left quadriceps muscle, which cost him a chance to play regularly for the Rangers. He would have been called up last week when David Murphy went on the disabled list, but he didn't come off the disabled list until Thursday and is only now starting to play again for the RedHawks.

The Rangers will also call up at least one catcher, either Taylor Teagarden or Max Ramirez, and another pitcher or two.

Eric Hurley will not be rejoining the Texas rotation, though. He has been sidelined with right shoulder inflammation, and the Rangers are not going to pitch him again this year. Instead, he'll concentrate on getting ready for next season.