SOURCE: RED SOX TO PROMOTE AARON COOK  —  According to a major league source, the Red Sox are planning on promoting Aaron Cook to their major league 25-man roster.  While the team did not summon him from the minors on May 1, thus giving him the right to request his release from his contract …

Omar Vizquel pondering retirement  —  Apr 15, 2012; Toronto, ON, Canada; Toronto Blue Jays pinch hitter Omar Vizquel (17) bats...  TORONTO  —  Omar Vizquel's last multiyear contract expired in 2007.  Ever since, baseball observers have speculated about when the Venezuelan marvel will retire as a player.

Yankees Sign Cuban Outfielder Adonis Garcia  —  The Yankees have signed Cuban outfielder Adonis Garcia.  —  Garcia, a 26-year-old righthanded hitter, is only 5-foot-7, 180 pounds and doesn't have any standout tools, so it's hard for scouts to see him fitting in as a big league regular.

Chavez exits with whiplash after diving play  —  NEW YORK — Third baseman Eric Chavez left in the middle of a fifth-inning at-bat during Wednesday night's game with a whiplash injury and a possible concussion.  —  He was taken to New York Presbyterian Hospital for head and spine scans.

Astros complete sweep with 8-1 win over Mets  —  HOUSTON—Chris Johnson had a pair of homers among his four hits and drove in a career-high six runs to back up another solid outing by Wandy Rodriguez, and the Houston Astros beat the New York Mets 8-1 on Wednesday to complete a three-game sweep.

Braun exits game with limp after flyout  —  SAN DIEGO — A bad day got worse for the Brewers when left fielder Ryan Braun exited Wednesday's game after limping off the field following a sixth-inning flyout.  —  The Brewers were in a 3-0 hole when Braun led off the sixth inning with a flyout to left field.

Jason Giambi's walk-off homer leads Rockies over Dodgers  —  The Rockies do nothing without drama.  After blowing a 5-3 lead in the top of the ninth, the Rockies beat the Dodgers 8-5 this afternoon at Coors Field with a three-run, pinch-hit home run by Jason Giambi in the bottom 0f the inning.

Athletics throw wet blanket over Sox  —  Felix Doubront emerged from a large pack of contestants to earn a spot in the Red Sox rotation during spring training, the 24-year-old lefthander impressing the judges with his improved fitness and consistency.  —  Keeping that job could be a tougher task.