-- When the Washington Nationals traded for Jose Guillen in the offseason, they hoped they would get a relatively cheap run producer, for he will earn $3.5 million this year and he drove in 104 runs for the Anaheim Angels in 2004.

So with the season winding down, how would Guillen assess his contributions?

"It's not the way I wanted," he said.

Guillen was hit by a pitch on his left hand in Monday's victory over the Florida Marlins, and he said Tuesday afternoon that he might not play until Sunday, the final day of the season, "Just to say thank you to the fans."

Guillen is hitting .282 with 24 homers and 76 RBI. A miserable September, in which he is hitting .132 with no homers, has contributed to those numbers, as have a slew of injuries from a bad shoulder to strained muscles in his rib cage.

Guillen, too, believes his power numbers would have been better had the Nationals not played at spacious RFK Stadium.

"Some people will look and say, 'Your numbers went down and you had over 500 at-bats,' " he said. "But nobody knows what I went through this year [with injuries]. Like I say, I don't want to make excuses. I just need to make sure people understand I'm not playing in Philadelphia or Cincinnati, in those ballparks. I was playing in a really tough ballpark. I wasn't able to put on a show for the home fans."

He hit .244 with runners in scoring position. Last season, he hit .327 in such situations.

"I don't do my job," he said. "That's one of the reasons [General Manager Jim Bowden] brought me here. I left a lot of runners on base this year. I don't know if it was mental preparation. I feel like it was not me this year."

Hernandez Surgery Scheduled

Livan Hernandez, who leads the National League in innings pitched, will have surgery on his right knee next Wednesday, according to team physician Bruce Thomas. The surgery, which will be done in Miami, is intended to clean up cartilage damage, which has bothered Hernandez since May. He will make his final start of the season Friday.