Alberto Callaspo 1B/2B.. OAK 18 Days

Callaspo is out of the lineup Monday vs. the Royals, MLB.com's Jane Lee reports.

Callaspo probably tops the depth chart at second base in Oakland, but he's still stuck with Eric Sogard in what mostly amounts to a timeshare at the position. The 31-year-old probably has a more impressive offensive track record than Sogard, but his .231/.302/.297 batting line on the season doesn't really confer him an advantage.

Alberto Callaspo 1B/2B.. OAK 25 Days

Callaspo is out of the lineup Monday versus the Rays.

Alberto Callaspo 1B/2B.. OAK 1 Month

Athletics activated INF Alberto Callaspo from the 15-day disabled list.

Callaspo missed the minimum amount of time with a strained right hamstring. Nate Freiman was optioned to Triple-A Sacramento to clear room on the roster.

Alberto Callaspo 1B/2B.. OAK 1 Month

Alberto Callaspo (hamstring) will play in a minor league rehab game with High-A Stockton on Saturday.

If all goes well, he's still looking at a return to the Athletics on Sunday. The veteran infielder has been sidelined since July 11 with a strained hamstring.

Alberto Callaspo 1B/2B.. OAK 1 Month

A's manager Bob Melvin said Alberto Callaspo (hamstring) could be activated Sunday when first eligible.

It will come right down to the wire, as Tuesday was the first day he was able to take batting practice since being placed on the DL. The veteran infielder may not need a rehab stint before being activated.

Alberto Callaspo 1B/2B.. OAK 1 Month

Alberto Callaspo (hamstring) took a successful round of batting practice Tuesday.

It's the first time he's done so since landing on the DL. Callaspo has also done some running, though he's yet to run the bases. He's expected to be activated in the middle of next week if all goes well.

Alberto Callaspo 1B/2B.. OAK 1 Month

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.

Alberto Callaspo 1B/2B.. OAK 2 Months

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.

Alberto Callaspo 1B/2B.. OAK 2 Months

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 1B/2B.. OAK 2 Months

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.