Willingham has six RBIs in victory

CHICAGO — Josh Willingham had two homers and six RBIs, Elijah Dukes hit a grand slam in a six-run fifth inning and the Nationals rocked Carlos Zambrano in his return from the disabled list, routing the Chicago Cubs, 15-6, on Tuesday night.

Dukes drove in a career-high five runs as the Nationals sent the Cubs to their 13th loss in 18 games, bringing out the boos at Wrigley Field. Chicago fell nine games out of first in the NL Central. Willingham was four for four with a solo homer in the fourth off Zambrano and a three-run shot off Tom Gorzelanny in the eighth.