BOS@OAK: Callaspo drills an RBI double to left

MIAMI -- Alberto Callaspo has seen a spike in playing time at second base, a nod to his continued production at the plate.

The veteran infielder appeared at the position just five times in the first two months of the season, while Eric Sogard absorbed the majority of starts at second against right-handers. But it's rather clear that Callaspo has the edge now.

He's 13-for-35 (.371) in 10 games since returning from the paternity list.

"He's made his own opportunities," manager Bob Melvin said Saturday. "He's swung the bat a lot better. His defense looks a lot better. A guy that played middle infield almost exclusively early in his career, it seems like he's getting acclimated to it again after playing third base for a number of years. He's made some nice plays for us here recently."

Sogard, batting .194, has started just one of the last eight games, and his roster spot is very much in flux. Expected to be optioned to Triple-A Sacramento upon Josh Reddick's return to the disabled list, he remained on board when the A's had to place Kyle Blanks (calf strain) on the DL.

In the meantime, Melvin will continue using him as an in-game option for defense and running.

"I told him to hang in there," he said. "These things flip around, just like how he took control of the job. It's all about performance. If someone's doing well, we're more apt to play them. He understands that."

Reddick exits in Miami with right knee strain

OAK@MIA: Reddick lines a game-tying triple to left

MIAMI -- A's right fielder Josh Reddick exited Saturday's 7-6, 14-inning win in Miami during the middle of the fourth inning with a right knee strain and will undergo an MRI on Sunday morning to determine the extent of his injury.

It's the same knee Reddick hyperextended at the beginning of the month, when he was forced to the disabled list for three weeks. He said after the game the pain is "similar, and maybe even a little more than the first time.

"We'll get it looked at tomorrow morning, and hopefully some good news comes back. Right now, it's just up in the air and a day-to-day situation."

Again, Reddick is a prime DL candidate, particularly with catcher Derek Norris (back) also expected to be sidelined Sunday. Moreover, first baseman Nate Freiman was a late scratch from Triple-A Sacramento's lineup Saturday evening not long after Reddick departed the game in Miami, signaling he could be on the move.

Freiman is hitting .277 with 14 home runs and 69 RBIs in 76 games for the River Cats.

Reddick had also been swinging a hot bat, collecting five hits in 11 at-bats since coming off the DL, making Saturday's turn of events all the more disappointing.

"I've told you guys, told myself, that I'm not going to play through pain, especially something that serious," he said. "I don't want to cost this team or myself.

"It's very, very frustrating. I take three weeks off, it feels great, I start swinging the bat really well, and then this happens. It's just a huge letdown."

All-Star hopeful Norris monitoring sore back

OAK@MIA: Norris exits game with apparent injury

MIAMI -- A's catcher Derek Norris has not yet fully recovered from the lower back soreness that led to his early departure in Friday's 9-5 win over the Marlins, leaving his status for a Sunday start in Miami up in the air.

Manager Bob Melvin said "it's a wait-and-see" type of thing.

Norris was "moving around a little slow" Saturday, according to Melvin, likely making him unavailable for the middle matchup of this three-game Interleague set. John Jaso made the start behind the plate against Marlins righty Nathan Eovaldi.

Norris' .299 batting average as a catcher ranks second among American League backstops, while his .400 on-base percentage and .497 slugging mark are tops at the position, numbers that could earn him his first career trip to the All-Star Game.

The 25-year-old is currently second in All-Star balloting among AL catchers behind the injured Matt Wieters.

Fans can cast their votes for starters at MLB.com -- online or on a mobile device -- using the 2014 All-Star Game MLB.com Ballot Sponsored by Experian until Thursday, July 3, at 8:59 p.m. PT. The 2014 All-Star Game will be played at Target Field on Tuesday, July 15 on FOX.

Worth noting

• Blanks, eligible to be reinstated from the DL on July 8, is hitting and playing catch but not yet running.

• The A's are slated to face right-handers Anibal Sanchez, Rick Porcello and Justin Verlander during a three-game set in Detroit beginning Monday. They'll counter with Scott Kazmir, Brad Mills and Jesse Chavez, respectively.