Washington, DC (SportsNetwork.com) - Kevin Seraphin had a go-ahead dunk with 5.7 seconds remaining and the Washington Wizards edged the Detroit Pistons 91-89 in preseason action.

Marcin Gortat had 11 points and 11 rebounds, John Wall netted a team-high 15 points, Seraphin posted 14 points and eight rebounds and Otto Porter recorded 13 points and six boards for the Wizards.

Andre Drummond tallied 21 points and seven rebounds and Greg Monroe supplied 17 points and 10 boards for Detroit, which lost second-year guard Kentavious Caldwell-Pope in the third quarter with a left knee injury.