Angels recalled OF Brennan Boesch from Triple-A Salt Lake.
The Angels are piecing together an outfield with Josh Hamilton and Kole Calhoun on the disabled list. Boesch had two home runs and nine RBI through the first 13 games with Salt Lake and will be a bench bat for the Angels.
Giants optioned OF Juan Perez to Triple-A Fresno.
Perez was optioned to make room for Jeremy Affeldt. Perez was hitless in eight at-bats with the Giants before the demotion.
Giants activated LHP Jeremy Affeldt from the 15-day disabled list.
Affeldt was sidelined to start the year due to a strained medial collateral ligament in his right knee. He'll resume his role as the Giants' primary left-handed reliever. Juan Perez was optioned to make room for Affeldt on the roster.
Mariners general manager Jack Zduriencik said Taijuan Walker will be shut down for two weeks with a right shoulder impingement.
Walker was scratched from his scheduled rehab start Tuesday due to the setback. It was supposed to be the final rehab start before he rejoined the big club, but that's gone by the wayside. Even when he does resume throwing, he'll need to build his arm strength back up before being recalled. At this point, his return date is up in the air.
Bryce Harper was scratched from the Nationals' lineup Wednesday due to left quad tightness.
The Nationals say he's been dealing with tightness in the quad since Friday. It was bad enough that he was removed from Monday's game, so it's not an situation that should be taken too lightly. At this point he seems to be day-to-day, but the team may give him more rest over the next few days to get his legs right.
Koji Uehara threw a 34-pitch bullpen session Wednesday and came out of it fine.
It was the last real hurdle before the right-hander returns to action for the Red Sox. He won't be available for Wednesday's game after throwing so many pitches in the bullpen, but he'll be ready for use for Thursday. It's assumed, then, that he'll also be ready to roll if a save opportunity arises.
Bryce Harper (quad) was a late scratch from the Nationals' lineup for Wednesday's game against the Marlins.
Harper was originally in the lineup batting third, but he was removed from the lineup about an hour before first pitch. There's no indication what the reason is but he left Monday's game with quad tightness, so its likely connected to that. He was replaced in left field by Tyler Moore.
Denard Span (concussion) could return from the concussion disabled list on Saturday.
Span first has to make it through rehab games on Thursday and Friday. He was placed on the 7-day concussion disabled list April 12 after a collision with Braves infielder Dan Uggla. All reports so far have been good.