Nats place Haren on waivers

WASHINGTON -- The Nationals have placed right-hander Dan Haren on revocable trade waivers, a baseball source confirmed to MLB.com. CBS Sports was the first to report that Haren was placed on waivers.

The Nationals have not confirmed they placed Haren on revocable trade waivers. A player exposed to revocable trade waivers can be claimed by any team, and if there are multiple claims, the player would be offered to the team with the worst record. At that point, a team has 48 hours to either try to work out a trade with the claiming club or remove the player from waivers.

A player can only be pulled back from waivers once, but if he clears waivers either the first or second time through, a team can attempt to trade him to any club. Most players go through waivers, so it is a common practice.

Haren has been feeling comfortable on the mound lately. Since coming off the disabled list on July 8, Haren is 2-2 with a 2.40 ERA and 32 strikeouts in 30 innings.

Despite pitching well in the last month, Haren doesn't think he will be back with the Nationals next year. He is 6-11 with a 5.14 ERA in 20 starts. The Nationals signed him to a one-year, $13 million deal to be one of their five starters.

"My heart says I probably won't be back," Haren said recently. "I haven't lived up to what I was paid to do and what I came here to accomplish, despite the last two or three weeks. The majority of the season has been a struggle for me. Even if I wanted to come back -- it has been a tough year. I haven't lived up to the billing so far. I don't know what next year is going to bring."