Felize went on the DL in late May with an abscess on his right side. His rehabilitation assignment consisted of 10 relief appearances for Round Rock. He is 1-2 with 5.09 ERA in 17 games out of the bullpen.
Thursday's move comes less than 24 hours after Martinez took the loss in a start against the Orioles. He's 5-5 with a 3.43 ERA in 16 starts.
Rangers manager Jeff Banister says the team is monitoring Martinez's innings and wants to keep him fresh.
Martinez pitched 150 innings last year and is already at 97.
Banister says, "We're just trying to manager that number at best we can."