Rockies recalled RHP Jorge Rondon from Triple-A Albuquerque.
He had allowed just one run over his first five relief appearances at Triple-A. Rondon will give manager Walt Weiss another option for the middle innings.
Athletics signed INF Ryan Roberts to a minor league contract.
Roberts was released by the Royals late ins spring training after hitting just .219/.265/.313 in Cactus League play. He'll give the A's some veteran infield depth.
Jesse Chavez will take Kendall Graveman's spot in the Athletics' rotation.
It was the presumed move after Graveman was sent down Sunday. Chavez was mostly very good as a starter for the A's last season (3.44 ERA) and allowed just one run and one hit over six frames in a spot start last week. He should be owned in AL-only formats and deeper mixed leagues.
White Sox recalled RHP Daniel Webb from Triple-A Charlotte.
He'll serve as the 26th man during Sunday's abbreviated doubleheader. Webb posted a 6.23 ERA over his first six relief appearances at Charlotte this season.
Padres recalled RHP Cory Mazzoni from Triple-A El Paso.
Acquired in late March from the Mets in the Alex Torres deal, Mazzoni allowed one run and had a 13/1 K/BB ratio over 8 1/3 relief innings for El Paso. He'll be used in middle relief.
Padres optioned LHP Chris Rearick to Triple-A El Paso.
He allowed four runs over his three relief innings with the big club. Cory Mazzoni has assumed Rearick's spot in the Padres' bullpen.
Yasiel Puig (hamstring) is not in the Dodgers' lineup Sunday.
It's the second straight game he's missed after aggravating his left hamstring on Friday and sixth contest he's missed overall. The Dodgers could wind up placing Puig on the disabled list, although they've yet to announce such a move. Andre Ethier is in right field Sunday. The club is also going with Alex Guerrero at third base and Justin Turner at second.
Dodgers purchased the contract of RHP Scott Baker from Triple-A Oklahoma City.
He'll get the ball on Sunday against the Padres. With Brandon McCarthy (elbow) presumably out for a while and Hyun-Jin Ryu (shoulder) still on the shelf, Baker could stick around for a bit if he pitches well. He came within one pitch of a seven-inning perfect game for Oklahoma City his last time out.