Callaspo was released by the Dodgers on Thursday, Eric Stephen of True Blue LA reports.

Callaspo was designated for assignment Wednesday night to make roster room for the newly acquired Chase Utley, Eric Stephen of SB Nation reports.

Alberto Callaspo (hamstring) thinks he'll be ready for activation just a couple days after he's eligible next Sunday. It's possible that Callaspo will play a few rehab games before the A's activate him. The veteran infielder has been on the shelf since mid-July with a strained right hamstring.

Albert Callaspo was diagnosed with a Grade 2 strain Saturday. Callaspo was placed on the 15-day disabled list with a strained right hamstring earlier Saturday, but the injury wasn't thought to have been this serious.

Athletics placed INF Alberto Callaspo on the 15-day disabled list with a strained right hamstring. Callaspo was originally expected to avoid the disabled list but the A's have now decided to rest him through the All-Star break. Andy Parrino was called up from Triple-A Sacramento in a corresponding move.

Alberto Callaspo (hamstring) is expected to avoid the disabled list, but is unlikely to return to the Athletics lineup over the weekend. Callaspo sustained the injury while running to first base during his first at-bat on Friday. The veteran infielder is confident that his hamstring strain isn't serious and that he'll be able to return to the lineup after the All-Star break.

Alberto Callaspo was removed from Friday's contest against the Mariners with a strained right hamstring. Callaspo sustained the injury while hustling down the first base line during his only at-bat of the night. The injury doesn't sound serious, so consider the valuable utility man day-to-day.

Alberto Callaspo finished 2-for-4 with a double and two RBI in a win over the Giants on Monday. This was a much needed positive showing from a player who had hit the skids since the last day of June, slashing .080/.077/.120 in 26 plate appearances over his past seven games. Callaspo will have to continue hitting to hold onto his second base gig. He's slashing .236/.314/.310 overall to go with three homers and 29 RBI.

Athletics manager Bob Melvin confirmed on Saturday that Alberto Callaspo has taken over as the team's primary second baseman. Callaspo has seized the job with a .390/.435/.439 batting line over his last 11 games. "He's made his own opportunities," Melvin said of Callaspo. "He's swung the bat better, his defense looks a lot better. A guy who played some middle infield almost exclusively early in his career seems like he's getting acclimated to it again after playing third base for a number of years. ... Based on the fact he's had really good at-bats, consistent at-bats, he's warranted the at-bats he's getting right now."

Athletics activated INF Alberto Callaspo from the paternity leave list. Callaspo missed the A's weekend series with the Yankees for the birth of his third child. The 31-year-old utility infielder is batting .218/.314/.299 this season.