Baseball's trading deadline (without waivers) is July 31, and there is almost always a flurry of activity as the contenders try to find that last piece to the pennant puzzle. These players are the most likely to be on the move.
1. Jake Peavy, Padres
Assuming the Padres hit a skid in June, Peavy will have a new address by August, probably with a National League team, after he rejected a trade to the White Sox. The Cubs have always been the team that everybody talks about with Peavy. Don't be surprised if the Phillies and Mets get interested, too, and maybe drive up the price.
2. Matt Holliday, A's
Holliday has MVP-caliber talent, and his deal is up after the season, but he's doing no favors for the A's. The A's are in last place and Holliday's numbers are down, with six homers as of May 29. But he has a great track record, and a contender will emerge with terms the A's want. Maybe across the bay in San Francisco? The Dodgers have to cool off for that to make sense for the Giants, however. No use trading for Holliday without a pennant race.
3. Nick Johnson, Nationals
As expected, Washington isn't going anywhere this season. So the power-hitting Johnson, who is healthy for the first time in years, is expendable, and is attractive because of a hot start. The Mets are the best fit with Carlos Delgado injured, but several other teams are likely to jump in. He's just 31, with an expiring contract.
4. Jose Valverde, Astros
Houston has been disappointing, in last place, and last-place teams don't need dominant closers with expiring contracts. If the Rays are in the thick of things in the AL East, he'd be a great fit for the defending AL champs, especially now that Troy Percival's future is in question.
5. Doug Davis, Diamondbacks
He flies under the radar, but the Diamondbacks left-hander is a solid middle-of-the-rotation starter who seldom has a great record, but doesn't hurt you, either. With some run support, he could be a key to a pennant contender. He also has an expiring deal, so he likely won't cost much in return, either.
6. Brad Penny, Red Sox
Why would a contender trade a dependable starting pitcher? Because they already have too many. If John Smoltz shows he's ready, Penny becomes expendable. And he will head to a contender somewhere. Besides the Red Sox, who doesn't need a starter? You can bet he'd go back to the NL, however, as the Red Sox won't want to aid a potential rival. He also has an expiring contract.
7. Hank Blalock, Rangers
Hard to believe Blalock is only 28. So he has some mileage left, and if the Rangers slip up - they're in first place as of May 27 - expect Blalock to be on the block, to a team that needs a power bat or a third baseman.
8. Dan Uggla, Marlins
A longer shot, as the 29-year-old second baseman is under contract for three more seasons with the Marlins. But Florida has always been a team that wheels and deals more than others, and they might decide Uggla is the key to a deal that restocks the farm system. He makes $5.43 million, and would likely go to a team that wants a new second baseman, not a half-season fill-in.
9. Erik Bedard, Mariners
This one is a little more iffy. He's got another year on his deal, but if the Mariners decide they're probably not a contender next year and want to stockpile some youngsters, he'll fetch more than just about everybody on this list in a trade. He's left-handed with a good track record and is having a very good 2009 season (2.48 ERA as of May 29).