Cardinals sent LHP John Gaub outright to Triple-A Memphis.
Mets acquired OF Eric Young Jr. from the Rockies in exchange for RHP Collin McHugh.
Starling Marte went 2-for-5 with a triple and a run scored as the Pirates beat the Reds 4-0 on Tuesday.
Felix Doubront fired eight scoreless innings, guiding the Red Sox to a 3-1 defeat of the Rays in the second half of Tuesday's doubleheader at Fenway Park.
J.J. Hardy went 3-for-4 with a home run as the Orioles beat the Tigers 5-2 on Tuesday.
Zack Wheeler tossed six scoreless innings Tuesday against the Braves to earn a win in his MLB debut.
Vinnie Pestano got through a tumultuous ninth inning to pick up his second save of the season on Tuesday as the Indians beat the Royals 4-3.
Edwin Encarnacion went 2-for-4 with a home run and three RBI as the Blue Jays beat the Rockies 8-3 on Tuesday.
Red Sox placed RHP Clay Buchholz on the 15-day disabled list, retroactive to June 9, with a strained neck.
Chris Perez (shoulder) allowed three homers and five runs in an inning of work in his second rehab appearance with Double-A Akron.
Marco Scutaro is back in the Giants' lineup Tuesday.
J.J. Putz (elbow) will begin a rehab assignment with Triple-A Reno on Thursday.