ARLINGTON (AP) — The Texas Rangers have placed right-hander Colby Lewis on the 15-day disabled list because of tendinitis in his forearm.
The move is retroactive to Sunday and the Rangers promoted left-handed prospect Martin Perez from Triple-A Round Rock for the first time to take Lewis' roster spot.
The earliest Lewis will be eligible for reactivation is July 9, after the All-Star break.
Lewis, 32, is 6-6 with a 3.51 ERA in 15 starts this season since making the team's opening-day start. In his last outing, Lewis gave up 12 hits and eight runs, seven of them earned, in just four innings. He holds the lowest rate of walks-per-nine-innings so far this season at 1.08 and the best strikeout-to-walk ratio with 7.50.
Perez, 21, is 5-5 with a 4.59 ERA in 15 starts at Round Rock, but allowed just two runs on four hits in 16 innings in his last two starts, both wins.
The Venezuelan signed with the Rangers as a teenager five years ago.
Fellow Rangers rookie Justin Grimm was roughed up in his second start for Texas on Monday night. He gave up eight hits and six earned runs in one inning in an 8-2 loss to Detroit.