Free-agent pitcher Jason Marquis is interested in joining the Nationals. Washington expressed interest in the right-hander during last week's winter meetings. Marquis said he can be one person who can help Washington's young pitching staff. "Learning from those veterans, learning how to win and recognizing situations, I felt I brought that to the table in Colorado and I really helped ... De La Rosa and Jimenez, who were trying to get over that hump," said Marquis. "I feel I could bring that [kind of leadership] to a team." Marquis went 15-13 with a 4.04 ERA in Colorado this season.