- The Los Angeles Angels placed right fielder Kole Calhoun on the 15-day disabled list with a sprained right ankle, the team announced. The team purchased outfielder Brennan Boesch's contract from Triple-A Salt Lake to fill the vacancy. Additionally, the Angels transferred Ryan Brasier from the 15-day DL to the 60-day DL, also via the team announcement. The right-hander is being diagnosed with a right elbow strain.
- The Seattle Mariners placed right-handed starter Blake Beavan on the 15-day DL with right shoulder tendinitis, the team announced. In a corresponding move, the M's recalled right fielder and first baseman James Jones from Triple-A Tacoma. Seattles also lost starter Taijuan Walker to an injury, as GM Jack Zduriencik announced the right-hander will be shut down for two weeks due to a right shoulder impingement, via The Tacoma News Tribune's Bob Dutton.
- The Mariners also placed first baseman Logan Morrison on the 15-day DL (retroactive to April 15) with a strained right hamstring, the team announced. Seattle recalled second baseman Nick Franklin to fill Morrison's spot.
- The Houston Astros officially promoted outfield prospect George Springer, the team announced. In a series of moves, the team also reinstated right-handed starter Scott Feldman from the bereavement list while optioning outfielder Robbie Grossman to Triple-A Oklahoma City and designating right-hander Lucas Harrell for assignment. Springer's promotion will draw the bulk of the attention here, but the reinstatement of Feldman, whose father recently passed away, is also a significant move. The right-hander has allowed just one run in three starts this season, posting a 2-0 record and 0.44 ERA.
- The New York Mets purchased the contract of right-handed starter Daisuke Matsuzaka and outrighted left-hander John Lannan, according to a team announcement. Lannan, who was pitching out of the bullpen this season for the first time in his career, allowed seven runs in five appearances (four innings) this season before being demoted. Matsuzaka, a veteran 33-year old starter, had put up a pair of nice starts at Triple-A, with a 2.25 ERA over 12 innings.
- The San Francisco Giants optioned outfielder Juan Perez to Triple-A Fresno to make room for left-handed reliever Jeremy Affeldt, who the club activated from the 15-day DL. The move means the Giants now have 13 pitchers on the big league roster, with the hope that Affeldt can bolster a bullpen that already ranks second in the majors in ERA. (Via the San Francisco Chronicle's Henry Schulman)
- The Chicago Cubs recalled Zac Rosscup from Triple-A Iowa to serve as the 26th man during the team's nightcap of the doubleheader in New York, the team announced. The left-hander pitched 1.2 perfect innings in the Cubs' 2-0 loss. Similarly, the Yankees recalled Shane Greene from Triple-A Scranton/Wilkes-Barre, only to send him back following the game, the team announced.
- The Texas Rangers sent Daniel McCutchen outright to Triple-A Round Rock, announced Rangers VP of Communications John Blake, after the right-hander was initially designated for assignment on Monday.
- Mariners general manager Jake Zduriencik said free agent Kendrys Morales reportedly turned down a three-year extension worth $30 million last year, according to the Seattle News Tribune's Todd Dybas. Morales, who has yet to find himself in a big league uniform this season, has to be regretting his decision to turn down that lucrative deal, along with the team's qualifying $14.1 million offer.
- The Oakland A's claimed right-hander Marcus Walden off waivers from the Toronto Blue Jays, according to a team announcement. Walden, primarily a starter throughout his minor league career, had made three appearances in relief at Triple-A Buffalo, surrendering six runs in four innings, before being claimed. He posted a 3.71 ERA in 26 starts while pitching exclusively at Double-A last season, making him eligible for a starting or bullpen role, depending on Oakland's needs at the big league level. Walden was optioned to Triple-A Sacramento.
- Atlanta Braves starter Julio Teheran pitched a complete-game shutout against the Phillies, surrendering just three hits without a walk. Catcher Evan Gattis provided the game's lone offense, going 4-for-4 with a solo home run as the Braves prevailed, 1-0.
- Cincinnati Reds starter Johnny Cueto also spun a complete-game shutout, striking out 12 Pirates batters while limiting Pittsburgh to just three hits and no walks in the 4-0 victory.
- Masahiro Tanaka allowed two hits and a walk over eight scoreless innings as the Yankees blanked the Cubs, 3-0.