The Maple Leafs, in third place in the Atlantic Division, five points behind the second-place Boston Bruins, are 6-1-0 in their past seven games and have held opponents to two goals or fewer in five of those games.
Forward Mark Stone and center Derick Brassard each will return for the Senators, who trail the New York Islanders by 13 points for the second wild card into the Stanley Cup Playoffs from the Eastern Conference. Stone missed the past nine games with a lower-body injury and Brassard was out the past two games with an undisclosed injury.
Ottawa, seeking its third straight victory, is 4-1-0 in its past five games after a six-game losing streak, and is 2-1-0 against Toronto this season.