Hamonic will slot in for Nick Jensen, who was a late scratch on Thursday. Hamonic has one goal and five assists in 56 games this season.

Jensen was a surprise scratch on Thursday, with the Sens not announcing his absence prior to warmups. Travis Hamonic will play in his place.

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.

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.

Crookshank played one game with Ottawa earlier this season but has spent most of the 2024-25 campaign in the AHL. The 25-year-old Crookshank has 40 points (22G / 18A) in 60 games with the Belleville Senators (AHL) this season.

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.

The Senators have won seven of their last nine games (7-2-0) and will turn to Forsberg between the pipes on Tuesday against the Buffalo Sabres. Forsberg played well in his previous outing, saving 19 of 20 shots (.950 SV%) in relief of Linus Ullmark in a 5-1 loss to the Colorado Avalanche. The 32-year-old Forsberg has a 2.74 GAA and .898 SV% in 24 appearances this season (9-10-1). The Senators enter Tuesday's contest as -151 road favorites against a Sabres club coming off an impressive 5-3 win over the Winnipeg Jets.

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.