Tonawanda News — "The second period wasn't good enough," said Sabres goalie Ryan Miller, who turned aside 33 shots. "We stopped doing some things we did early in the game and it caught up with us."
Van Riemsdyk's power-play goal at 14:28 of the third — his team-leading 11th — gave Toronto breathing room after Miller stopped him with a glove save earlier on the power play.
Maple Leafs coach Randy Carlyle said van Riemsdyk's work away from the puck was a big reason for his success.
"He probably skated as strong in this hockey game as any game he has this year," Carlyle said. "It's good to see him move his feet and be rewarded.
"I think if he continues to skate and move his feet the way he did tonight, I don't think he shouldn't continue to score if he's going to stay around the net and go into those tough areas.
"He's going to continue to play with our top-six grouping of forwards and he's going to maintain power play time, all of those things should indicate he can continue to make contributions. It's all up to him."
Dion Phaneuf also scored for Toronto, which won its third straight home game. Ben Scrivens stopped 31 shots for his third win in five starts since James Reimer's knee injury Feb. 11.
Tyler Ennis scored for Buffalo.
Buffalo outshot Toronto 13-10 in the first period and also had the period's lone goal. Ennis scored his sixth of the season with high wrist shot to Scrivens' blocker side at 13:20.
Both goaltenders were sharp as Miller made a quality save on Toronto's Leo Komarov while Scrivens twice denied Thomas Vanek with a nice split-pad save.
"You just try to get on a roll and stop as many pucks as possible," Scrivens said of his stop on Vanek. "Obviously I was fortunate he wasn't able to get the rebound up on me, but I gave myself an opportunity to make the save.