Nick Martinez struggled versus the Mariners, allowing five runs on six hits over five innings in Tuesday's loss.
Neftali Feliz worked a scoreless ninth inning to close out the Rangers' 2-0 win Monday over the Mariners.
Daniel Robertson finished 1-for-3 with two walks in Monday's 2-0 victory over the Mariners.
Miles Mikolas painted eight shutout innings, striking out five, in a 2-0 victory Monday against the Mariners.
Rangers purchased the contract of C Tomas Telis from Triple-A Round Rock.
Rangers recalled OF Michael Choice from Triple-A Round Rock.
Rangers placed OF Shin-Soo Choo on the 15-day disabled list with a bone spur in his left elbow.
Derek Holland (back) will rejoin the Rangers' rotation next week.
Shin-Soo Choo will have season-ending surgery to remove a bone spur from his left elbow.
Rangers general manager Jon Daniels indicated in a radio interview with KRLD-FM/105.3 "The Fan" on Monday that Yu Darvish (elbow) is unlikely to pitch again this season.
Rangers signed C J.R. Towles to a minor league contract; assigned him to Triple-A Round Rock.
Neftali Feliz threw a scoreless ninth inning to close out the Rangers' 3-1 win over the Royals on Sunday.
Robinson Chirinos went 2-for-3 with an RBI single in a win over the Royals on Sunday.
Adrian Beltre went 2-for-3 with an RBI double in Sunday's win over the Royals.
Scott Baker limited the Royals to one run over five innings in a win on Sunday.