Guillen is batting .282 with 24 home runs and 76 RBIs and is in a 9-for-68 (.132) slump during the month of September.
"The season is not over yet," he said. "I'm still part of this thing until the last day. But I really want to play at home the last day of the season."
After the season ends, Guillen is planning to take a few weeks off and hopes to work out with Kazuhiko Tomooka, the Nationals' strength and conditioning coordinator.
"I have a great plan for this year and I already talked to Kazu, and it will be good," Guillen said.
Guillen also is hoping manager Frank Robinson and interim general manager Jim Bowden return to the Nationals next season. Guillen has often talked about how both Robinson and Bowden have showed him a lot of respect.
"They are my people," Guillen said. "[Because of them], I feel like I've finally found a home. I gave them everything I had this year. They have helped me so much. They have given me the opportunity to be successful. I want them back."
Injury report: Starter Tony Armas Jr. had arthroscopic surgery on his right shoulder on Tuesday. The procedure was performed by Dr. Tim Kremchek. Armas is expected to start throwing a baseball within six to eight weeks.
Second baseman Jose Vidro went to Cincinnati on Wednesday to see Kremchek to check on his right knee, which has been sore every since he was taken off he disabled list on July 5. Vidro hasn't started a game since Sept. 21 and has been relegated to pinch-hitting duties.
It's not all bad: Right-hander Darrell Rasner, one of Washington's top pitching prospects, hasn't played in a game since Sept. 11. Rasner is not injured, but Robinson was reluctant to use him while the Nationals were in the Wild Card race.
Rasner said he is not frustrated by his inactivity. He has decided to learn from the veteran pitchers.
"I'm trying to learn as much as I can and get the experience to understand more about the art of pitching," Rasner said. "I'm keeping everything positive. I'm watching how guys go about their business, watching how they warm up, certain little things. I'm trying to take as much as I can from this."
Did you know? With a victory on Wednesday, the Nationals would reach 40 wins on the road. The Expos won 40 or more road games in 1982, '85, '86, '87, '92 and '94.
Stat of the day: The Nationals are 55-50 during night games and 25-28 during the day.
On deck: The Nationals have the day off on Thursday, but play their final three-game series against the Phillies starting Friday night.
The last time these two teams met was Sept. 2-4, with the Nationals taking two out of three.
In Game 1 on Friday, Livan Hernandez will face the Phillies for the third time this season. He is 1-1 with a 6.39 ERA against them.
In his last start on Saturday night, Hernandez had one bad inning, and it cost him, as the Nationals lost to the Mets, 5-2.