Mittelstadt returned for three games but re-aggravated his upper-body injury on Sunday and will come out of the lineup on Tuesday. Tage Thompson is set to return to the lineup to replace Mittelstadt.
Kastelic was a fifth-round pick in 2019 and has spent the last year and a half in Belleville (AHL). The 6-foot-3, 210 lbs. centre, who has scored five goals with six assists (11 points) in 31 AHL games this season, will replace Josh Norris (shoulder).
Mittelstadt will play for the first time since December 7th and is expected to centre the second line with Peyton Krebs and Anders Bjork. Mittelstadt has scored one goal on seven shots in four games this season.
DiPietro may be in line to start on Sunday with Jaroslav Halak in COVID-19 protocol and Thatcher Demko playing yesterday. DiPietro has gone 4-7-2 with a 3.19 GAA and .896 SV% in 13 AHL games this season.
Geekie will not play Wednesday in Dallas, so Alex Wennberg will move up to the third line and Max McCormick will draw back into the lineup.
With Tuukka Rask signing a one-year deal on Tuesday, Swayman will head to the AHL for the time being. Swayman has gone 8-6-2 with a 2.26 GAA and .918 SV% in 16 games with the Bruins this season. The last time he was in the AHL, he was 8-1-0 with a 1.89 GAA and .933 SV%.
Brown suffered an MCL injury vs. the Sharks on Saturday and will miss at least one month. Connor Bunnaman replaced Brown as the Flyers' fourth-line centre in Tuesday's practice.
McAvoy missed the last two games with a lower-body injury but is expected to replace Urho Vaakanainen in the lineup on Monday. McAvoy, who has 20 points (5G / 15A) in 28 games this season, will be back on the top pairing and PP1 in Washington.
McAvoy missed Thursday's game vs. the Wild but was on the ice for Saturday's morning skate and will be a game-time decision on Tampa. McAvoy has 20 points (5G / 15A) in 28 games this season.
McAvoy's injury is expected to be short-term but it's serious enough to keep him out of the lineup on Thursday. John Moore will replace him on the Bruins' blueline.
