In Toronto, Rick Vaive scored his 40th goal and had an assist to help the Maple Leafs extend their winning streak to four games.
Rookie goalie Roberto Romano shut out Toronto until 5:19 of the second period when Vaive scored from the faceoff circle to tie the game at 1.
Paul Gardner scored the first goal, his 16th of the season, scooping Mike Bullard's power-play centering feed past goalie Mike Palmateer.
Toronto, which outshot Pittsbugh by 15-5 in the middle period, took a 2-1 lead at 13:21 when defenseman Dave Farrish took Vaive's blueline pass and put a 50-foot shot past the screened Romano on a power play.
The Washington Capitals expect to clinch their first playoff berth Wednesday in Edmonton or Thursday in Calgary. The Capitals have 72 points and New Jersey 35 with 19 games left. Should the Devils win every remaining game, Washington would need only three points to wrap up things.
The trade of goaltender Ron Low from Edmonton to New Jersey completes a 360-degree cycle. Low was the Capitals' goalie for the first three sorry seasons of the club's existence, Now he again is with one of the worst teams in hockey.
There has been no talk of a coaches' union since Gary Green of Washington, Pat Quinn of Philadelphia and Red Berenson of St. Louis tried two years ago. All were fired last season and only Berenson, an assistant in Buffalo, is in the NHL.