- The New York Yankees placed right fielder Carlos Beltran on the 15-day DL, retroactive to May 13, with right elbow inflammation, and purchased the contract of right-hander Chase Whitley from Triple-A Scranton/Wilkes-Barre, the team announced.
- The Tampa Bay Rays placed second baseman Ben Zobrist on the 15-day DL with a dislocated left thumb and purchased the contract of second baseman Cole Figueroa from Triple-A Durham, according to a team announcement.
- The Toronto Blue Jays placed center fielder Colby Rasmus on the 15-day DL, retroactive to May 13, with right hamstring tightness, the team announced. Outfielder Anthony Gose was recalled from Triple-A Buffalo to fill Rasmus' roster spot.
- The New York Mets placed catcher Travis d'Arnaud on the 7-day DL, retroactive to May 14, with a concussion, the team announced. Catcher Juan Centeno was recalled from Triple-A Las Vegas.
- The Cleveland Indians placed center fielder Nyjer Morgan on the 15-day DL with a right knee sprain and recalled first baseman Jesus Aguilar from Triple-A Columbus, per a team announcement.
- The Cincinnati Reds transferred Mat Latos from the 15-day DL to the 60-day DL, according to a team announcement. The right-hander is recovering from a left knee surgery that he underwent in February 2014.
- The Yankees activated right-hander Bruce Billings from the 15-day DL and designated him for assignment, the team announced.
- The Pittsburgh Pirates activated left-hander Wandy Rodriguez from the 15-day DL and optioned outfielder Jaff Decker to Triple-A Indianapolis, according to a team announcement.
- The New York Mets sent right-handed reliever Kyle Farnsworth outright to Triple-A Las Vegas and recalled left-hander Josh Edgin from Triple-A, according to a team announcement.
- The Reds purchased the contract of left-hander Jeff Francis from Triple-A Louisville, per a team announcement.
- The San Diego Padres recalled right-hander Kevin Quackenbush from Triple-A El Paso, the team announced.
- The Baltimore Orioles recalled right-hander Evan Meek from Triple-A Norfolk and optioned Kevin Gausman to Triple-A, according to a team announcement.
- The San Diego Padres traded first baseman Kyle Blanks to the Oakland A's for left fielder Jake Goebbert and a player to be named later, as reported by ESPN's Jerry Crasnick. The Oakland A's designated first baseman Daric Barton for assignment to free up space on the roster.