ARLINGTON, Texas (AP) The Texas Rangers have optioned right-hander Nate Adcock to Triple-A Round Rock, making room on the roster for the expected return of Robbie Ross.

Texas made the moves Thursday, when it recalled left-hander Ross from Round Rock to start that night in place of ailing Yu Darvish.

Darvish was placed on the 15-day disabled list Wednesday with right elbow inflammation. The Rangers had said then that Ross would start the series finale against Tampa Bay.

Adcock had a 4.50 ERA in seven relief appearances for the Rangers since getting called up July 24.

Converted reliever Ross began the season in the Texas rotation, and went 1-4 with a 4.78 ERA in nine starts before going back to the bullpen. He was optioned June 17 to Round Rock, where he started.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.