Tkachuk did not play on Tuesday against the Buffalo Sabres and will remain out of the lineup on Thursday against the Tampa bay Lightning. In his previous game, Tkachuk was playing on a line with Shane Pinto and Ridly Greig, a spot that has been filled by Michael Amadio. The 25-year-old Tkachuk has 55 points (29G / 26A) in 71 games this season.

The Senators appear to control the first Wild Card position in the Eastern Conference. Still, they will be desperate for a win after losing two straight (0-1-1), turning to Ullmark between the pipes on Thursday against the Tampa Bay Lightning. Ullmark struggled in his most recent outing, allowing four goals on 21 shots (.810 SV%) in a 5-2 loss to the Buffalo Sabres. The 31-year-old netminder has a 2.80 GAA and .907 SV% in 40 games this season (21-14-3). The Senators enter Thursday's contest as +127 home underdogs against a Lightning squad outscoring their opposition by a whopping 25-5 score during a four-game winning streak.

The Senators are coming off a 1-0 overtime loss to the Pittsburgh Penguins and will hope to rebound on Tuesday against the Buffalo Sabres, turning to Ullmark between the pipes. The 31-year-old Ullmark was solid in his most recent outing, saving 29 of 31 shots (.935 SV%) in a 3-2 win over the Columbus Blue Jackets. He has a 2.76 GAA and .909 SV% in 39 games this season (21-13-3). The Senators enter Tuesday's contest as -189 home favorites against a Sabres team coming off an 8-5 win over the Washington Capitals.

Tkachuk was absent from the morning skate on Tuesday and will not play against the Buffalo Sabres due to an upper-body injury. In Ottawa's previous game, Tkachuk was playing on a line with Shane Pinto and Ridly Greig, a spot that has been filled by Michael Amadio. The 25-year-old Tkachuk has 55 points (29G / 26A) in 71 games this season.

The Senators are coming off a 1-0 overtime loss to the Pittsburgh Penguins and will hope to rebound on Tuesday against the Buffalo Sabres, likely turning to Ullmark between the pipes. The 31-year-old Ullmark was solid in his most recent outing, saving 29 of 31 shots (.935 SV%) in a 3-2 win over the Columbus Blue Jackets. He has a 2.76 GAA and .909 SV% in 39 games this season (21-13-3). The Senators enter Tuesday's contest as -189 home favorites against a Sabres team coming off an 8-5 win over the Washington Capitals.

The Senators turned to Anton Forsberg between the pipes in their previous game and came up short in a 3-2 loss to the Buffalo Sabres. They will return to Ullmark on Thursday against the Detroit Red Wings as he looks to build on his 2.78 GAA and .908 SV% through 37 appearances this season (19-13-3). The 31-year-old Ullmark was solid in his last game, saving 25 of 27 shots (.926 SV%) in a 3-2 win over the New Jersey Devils. The Senators enter Thursday's contest as -123 road favorites against a Red Wings squad that has lost three of their last four (1-3-0).

Matinpalo will sit in order to make way for the return of Nick Jensen (lower-body). Matinpalo has zero goals and one assist in 30 games this season.

Jensen has been battling a lower-body injury lately, taking practices off to manage it, and has missed four straight games but will return to the lineup on Tuesday against the Buffalo Sabres. The 34-year-old Jensen is averaging 20:20 time-on-ice and has 19 points (3G / 16A) in 60 games this season.

Jensen has been battling an undisclosed injury lately, taking practices off to manage it, and has missed four straight games but could return to the lineup on Tuesday against the Buffalo Sabres. The 34-year-old Jensen is averaging 20:20 time-on-ice and has 19 points (3G / 16A) in 60 games this season.

Halliday was a fourth-round pick, 104th overall, of the Senators in the 2022 NHL Entry Draft. The 22-year-old forward has yet to play an NHL game but has been impressive in the AHL this season, scoring 43 points (15G / 28A) in 59 games with the Belleville Senators this season.

The Senators are coming off a disappointing 6-3 loss to the Montreal Canadiens, where Ullmark allowed four goals on 31 shots (.871 SV%). They will turn Ullmark between the pipes again on Thursday against the Colorado Avalanche. The 31-year-old Ullmark has a 2.71 GAA and .910 SV% in 35 games this season (18-12-3). The Senators enter Thursday's contest as slight +106 home underdogs against an Avalanche squad that played last night, losing 2-1 to the Toronto Maple Leafs.

The Senators are coming off a disappointing 6-3 loss to the Ottawa Senators, where Ullmark allowed four goals on 31 shots (.871 SV%). They will turn Ullmark between the pipes again on Thursday against the Colorado Avalanche. The 31-year-old Ullmark has a 2.71 GAA and .910 SV% in 35 games this season (18-12-3). The Senators enter Thursday's contest as slight +106 home underdogs against an Avalanche squad that played last night, losing 2-1 to the Toronto Maple Leafs.

Jensen has been battling an undisclosed injury lately, taking practices off to manage it, and will miss a second consecutive game on Tuesday. The 34-year-old Jensen is averaging 20:20 time-on-ice and has 19 points (3G / 16A) in 60 games this season.

The Senators are putting themselves in a prime position to secure a playoff spot in the Eastern Conference, riding a six-game winning streak, and will turn to Ullmark between the pipes on Tuesday against the Montreal Canadiens. Ullmark was solid in his most recent outing, despite a costly turnover that resulted in a goal, saving 21 of 23 shots (.913 SV%) in a 4-2 win over the Toronto Maple Leafs. The 31-year-old goalie has a 2.66 GAA and .911 SV% in 34 games this season (18-11-3). The Senators enter Tuesday's contest as -125 road favorites against a Canadiens team with points in three straight (2-0-1).

Kaliyev suffered the injury last week in a 3-1 loss to the Winnipeg Jets. The 23-year-old Kaliyev ends a disappointing 2024-25 campaign with four points (3G / 1A) in 14 games with the Rangers this season.

Jensen has been battling an undisclosed injury lately, taking practices off to manage it, but he will sit Saturday in Toronto. Travis Hamonic will draw back into the lineup to replace him.