Detroit Tigers right-hander Michael Fulmer, the American League Rookie of the Year in 2016, was placed on the 10-day disabled list with right elbow ulnar neuritis, or inflammation, on Thursday.
There is no set timeline for Fulmer's return, but there is no ligament damage, according to manager Brad Ausmus.
Fulmer is 10-9 with a 3.59 ERA in 21 starts. The Tigers have not decided which pitcher will take in Fulmer's spot Saturday against Baltimore.
In a corresponding move, Detroit selected the contract of right-handed reliever Edward Mujica from Triple-A Toledo.
--Colorado Rockies closer Greg Holland returned from a cut on his right index finger, an injury that manager Bud Black said occurred Tuesday in a kitchen accident.
Holland picked up the win over the New York Mets on Thursday when he pitched one inning of scoreless relief.
Holland leads the majors with 33 saves, but was unavailable Tuesday and Wednesday because of the injury.
The 31-year-old Holland had missed all of 2016 because of Tommy John surgery.
--The Oakland Athletics activated right-hander Kendall Graveman from the 10-day disabled list in order to make Thursday's scheduled start against the San Francisco Giants.
Graveman, who was Oakland's Opening Day starter, has missed the past two-plus months due to a shoulder injury. The 26-year-old is 2-2 with a 3.83 ERA in eight starts.
Oakland optioned right-hander Daniel Gossett to Triple-A Nashville to open up a roster spot. Gossett was 3-6 with a 5.09 ERA in 10 starts for the Athletics.