Why he's available: Baltimore has a top catching prospect -- Matt Wieters -- on the near horizon.
Will he go? Hernandez has to demonstrate that he's healthy and that he can hit before he gets traded.
Where might he go? To any team with a young pitching staff on the verge of contention.
Why he's available: The emergence of Jesus Flores has made Lo Duca expendable.
Will he go? Lo Duca has to stay healthy to be moved. He missed most of the first half because of a right hand injury.
Where might he go? He could bring leadership to a team in contention.
Why he's available: The emergence of Jesus Flores has made Estrada expendable.
Will he go? Like Paul Lo Duca, Estrada has to stay healthy to move. He missed most of the first half because of a right elbow injury.
Where might he go? He could bring a solid bat to a contending team like the Mets.
Why he's available: When Olivo arrived at Spring Training, he thought he'd be given a shot as the starting catcher. Not so -- John Buck was the Royals' guy, so it'd be no surprise if the disappointed Olivo were looking toward free agency next winter to find an everyday catching job.
Will he go? Olivo has shown good power since getting more at-bats as a designated hitter as well as being catcher John Buck's backup. Behind the plate, he's not supposed to be Buck's equal as a game-caller but Olivo's strong arm regularly cuts down runners.
Where might he go? Good catching is hard to find so Olivo would be a catch for a team hurting in that department.
Why he's available: Chris Iannetta is getting the bulk of playing time behind the plate, and there's always a need for catchers.
Will he go? It makes sense, as long as the Rockies either get rid of the rest of his salary (he's under a two-year, $7.25 million deal) and find an immediate useful player.
Where might he go? A team not confident in its catcher can do well with Torrealba, who gained big-game experience last year.
Why he's available: Is 37 years old and in the final year of the two-year, $7.25 million deal he signed prior to 2007.
Will he go? Jays might prefer to keep Zaun in the fold for the rest of the year simply to maintain depth behind the plate.
Where might he go? Zaun, who is a switch-hitter, could serve as an experienced backup for a number of teams.