Neftali Feliz (elbow) had his first rehab appearance at Triple-A rained out Sunday.
Feliz was slated to throw two innings. That outing will likely just be pushed back a game. While he is expected to be stretched out as a starter, it's possible he'll rejoin the Rangers as a reliever. The 24-year-old right-hander has been sidelined for nearly two months with a sprained ulnar collateral ligament in his elbow.