Dan Haren has been feeling comfortable with the Washington Nationals, but doesn't think he'll return to the team.

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

"In the last few weeks, I have been more myself," Haren said. "The city has been good. I've enjoyed my time in D.C. I enjoy the history. I've walked around D.C. a few times just to take it all in. It has been nice."

Haren doesn't think he will be back with the Nationals next year because of the season he has had, overall. He is 6-11 with a 5.14 ERA in 20 starts.

"My heart says I probably won't be back," Haren said. "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."