Reimer turned aside all 14 first-period shots he saw as Leo Komarov was giving the Leafs a 1-0 lead with goal 3:49 into the game on a redirection of a Mark Fraser shot.
David Clarkson scored for the Devils, who fell three points out of an Eastern Conference playoff spot.
Martin Brodeur made 16 saves for New Jersey.
Pistorius testifies he didn't consciously pull trigger when he shot girlfriend
Pregnant Mila Kunis wins 'Best Villain' at MTV Movie Awards