ARLINGTON (June 22, 2012) -- The Texas Rangers have placed first baseman Mitch Moreland on the 15-day disabled list and designated pitcher Mark Hamburger for assignment to clear roster space for Roy Oswalt.
The veteran right-hander was scheduled for make his first start for the Rangers on Friday night against Colorado. Oswalt started four minor league games after signing a one-year deal with Texas on May 29.
The move on Moreland was retroactive to Wednesday, the day after he strained his left hamstring running the bases against San Diego. He's eligible to return July 5.
Oswalt is replacing Hamburger on the 40-man roster. The right-handed reliever was 0-2 with a 6.55 ERA at Triple-A Round Rock. The Rangers now have 10 days to trade, release or outright Hamburger to the minor leagues.