The Texas Rangers placed struggling pitcher Tanner Scheppers on the 15-day disabled list Friday with inflammation in his right elbow.
An MRI found no structural damage, but Scheppers will rest his arm for 10 days, MLB.com reported.
The Rangers purchased the contract of left-hander Aaron Poreda to fill Scheppers' spot on the pitching staff and designated infielder Andy Parrino for assignment to make room on the team's 40-man roster.
Scheppers, 27, was moved from the bullpen to the rotation this year and the results were less than spectacular in the first few weeks of the season.
Texas' Opening Day starter has posted an 0-1 record with a 9.82 ERA in four outings. He has given up 20 earned runs in 18 1/3 innings.
Last season, Scheppers excelled as a reliever, compiling a 6-2 record with a 1.88 ERA in 76 appearances and 76 2/3 innings.
The Rangers' pitching staff has been hit hard by injuries. Derek Holland, Matt Harrison and Joe Saunders are on the disabled list, but Harrison appears to be close to returning.