He tossed one inning in Saturday's 8-3 loss to the Angels, allowing two hits.
"We want to get him out there as much as we can and face hitters," manager Ron Washington said. "I saw him get on top of some pitches last night, which is a good sign."
While Texas is excited about Feliz's fastball velocity, the team is hoping he can also work on his secondary pitches.
"He is getting a feel for other pitches, which could be a blessing," Washington said.
Quinn Roberts is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.