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07/31/09 2:10 PM ET

On the block: Middle infielders

Dan Uggla, Marlins
Why he's available: Making $5.35 million in his first year of arbitration, and in line for a bigger raise in 2010. Even though his batting average is lower than usual, his power numbers are too high to keep his price tag down.

Will he go? Not if the Marlins remain in the race. Uggla is too valuable to be moved if the team is in striking distance.

Where might he go? The Giants have interest. Arizona may also want him back. He came up in the Diamondbacks system. Basically any team in need of power.

J.J. Hardy, Brewers
Why he's available: Hardy has been Milwaukee's starting shortstop since 2005, but with prospect Alcides Escobar biding his time at Triple-A, there's some serious depth here. Hardy has one more year of arbitration-eligibility left before hitting free agency in the 2010-11 offseason.

Will he go? Teams might be scared away by Hardy's up-and-down season, so his value is low at the moment. Still, shortstops with his defensive ability and offensive potential are rare, and he's only 26.

Where might he go? Boston seems to come up most often in rumors about Hardy, though Nick Green's contributions might convince the Red Sox they are set. Baltimore has been a rumored destination in the past.

Kelly Johnson, Braves
Why he's available: The Braves have depth at second base and they're starting to realize that Johnson likely won't live up to the expectations he produced during his first full season in 2007.

Will he go? His value dipped significantly, creating the possibility that he would have to be included as part of a package.

Where might he go? The Giants are one of the teams that might believe he could upgrade their offensive production at second base.

Aaron Miles, Cubs
Why he's available: Miles was signed to backup at third, but hasn't been able to play there because of injuries. Aramis Ramirez is expected back around the All-Star break.

Will he go? Probably not, because he hasn't been able to stay healthy. A sore shoulder sidelined him in May, and now he has a hyperextended elbow.

Where might he go? If a team is looking for backup help at second, maybe. But not many teams in contention need backup help.

Jamey Carroll, Indians
Why he's available: Carroll is in the final year of his contract, and contenders might value his versatility and veteran presence.

Will he go? If the Indians get the pitching they'd likely want in return, it's certainly possible.

Where might he go? The Mets are one club that needs infield depth.

Blake DeWitt, Dodgers
Why he's available: Third base is his natural position and Casey Blake is signed for two more years. On the other hand, he can play second base and Orlando Hudson is not signed past this year.

Will he go? The staff loves his approach, but he lacks the power expected at third base.

Where might he go? Any club that watched him play in the big leagues last year.

Adam Kennedy, A's
Why he's available: The A's haven't said he's available, but he's a veteran who was acquired to fill in for injured Mark Ellis, and Ellis is back in the lineup. Kennedy has playoff experience and is one of the few Athletics who might be able to bring a quality prospect in return.

Will he go? If someone offers a decent prospect and the A's aren't in contention, there's no reason for Oakland to keep him.

Where might he go? He was acquired from the Rays, who almost immediately regretted it after Akinora Iwamura went down with a major injury. The Giants are unsettled as second base, too. And Kennedy can play all over the infield, so he might be attractive to a team in need of a veteran utility man.

John McDonald, Blue Jays
Why he's available: McDonald has been rarely used this season and is in the final year of the two-year contract he signed during the 2007 season.

Will he go? Maybe, maybe not. The Jays like having his glove available off the bench, but it's almost wasted with how little he actually plays.

Where might he go? Any team looking to add a defensive-minded shortstop for the stretch run.

This story was not subject to the approval of Major League Baseball or its clubs.