- St. Louis Cardinals starter Joe Kelly was placed on the 15-day DL with a left hamstring strain, according to a team announcement. In a series of corresponding moves, the Cardinals also recalled Eric Fornataro and Jorge Rondon from Triple-A Memphis while optioning right-hander Keither Butler to Memphis.
- The Kansas City Royals placed outfielder Lorenzo Cain on the 15-day DL with a left groin strain, the team announced, recalling left-hander Justin Marks from Triple-A Omaha to fill the roster spot. Cain was batting .333 with a .745 OPS prior to his injury.
- The New York Yankees optioned right-handed starter Shane Greene to Triple-A Scranton/Wilkes-Barre after calling him up on Wednesday for the nightcap of the team's doubleheader. The Chicago Cubs also optioned left-handed reliever Zac Rosscup to Triple-A Iowa after calling him up on Wednesday for the same purpose.
- The Seattle Mariners made a series of moves on Thursday, activating right-hander Stephen Pryor from the 15-day DL and optioning Pryor to Triple-A for the time being. The Mariners also placed first baseman Ji-Man Choi on the restricted list after he was suspended 50 games after testing positive for methandienone, a banned performance-enhancing drug.
- The Chicago White Sox purchased the contract of right-handed reliever Zach Putnam from Triple-A Charlotte, the team announced, designating left-handed reliever Donnie Veal for assignment.
- The Milwaukee Brewers placed first baseman Lyle Overbay on the paternity list, recalling utilityman Elian Herrera from Triple-A Nashville, the team announced. Overbay hasn't factored into the equation much for the Brewers this season, accumulating just 10 at-bats thus far.
- The Minnesota Twins recalled infielder Eduardo Nunez from Triple-A Rochester, the team announced. Playing third base and batting seventh, Nunez went 1-for-3 with a walk in the nightcap of the Twins' doubleheader on Thursday.
- The Houston Astros optioned Kevin Chapman to Triple-A Oklahoma City and purchased the contract of Raul Valdes, per MLB.com's Brain McTaggart.
- Nearly 20 teams showed up to watch Joel Hanrahan throw in a showcase at the University of Tampa on Thursday, according to CBS Sports' Jon Heyman. According to Heyman's article, scouts spoke highly of the veteran closer:
Scouts there say Hanrahan looked fit and healthy, and pitched at 87-93 mph, putting him possible ahead of schedule for someone 11 months removed from Tommy John surgery.
- Cardinals starter Adam Wainwright pitched a complete-game, two-hit shutout as St. Louis crushed Washington, 8-0.
- White Sox left-hander Chris Sale pitched seven innings of one-hit ball, striking out 10 batters in Chicago's 3-1 loss to the Red Sox.