PITTSBURGH (Reuters) - Craig Adams scored in the third period and Marc-Andre Fleury made 29 saves to guide an injury-riddled Pittsburgh Penguins to a 1-0 victory over the New York Islanders on Tuesday.

With Sidney Crosby missing a ninth straight game with concussion symptoms and Evgeni Malkin also out with illness and a knee injury, Fleury's 18th career shutout kept the Penguins five points behind front-running Philadelphia in the Atlantic Division.

"(Dustin Jeffrey) won the faceoff and got a shot on net, (Arron Asham) got the rebound and I got the second one," Adams told reporters of his winning goal.

"It was on my stick and then I just whacked at it, I think it went between (Poulin's) legs."

In the win, Pittsburgh once again thrived on defense and has allowed just nine goals over the past six games.

New York put an extra attacker on the ice in the final minute and attempted to surge to a score, but Fleury and the Pens held off the assault.

The Islanders (15-26-7) have lost four of their last five.

John Tavares led the visitors with four shots.

(Writing by Jahmal Corner in Los Angeles; Editing by John O'Brien)