Roy Oswalt gave up five runs over four innings Thursday in his second start with Triple-A Round Rock. All five runs scored in the third inning. Oswalt allowed six hits on the night, including a grand slam by Royals' top prospect Wil Myers. He struck out four and walked one and threw 38 out of 68 pitches for strikes. The veteran right-hander is still in the process of getting stretched out and is expected to make two more minor league tuneup starts before joining the Rangers' rotation.