Buffalo's practice facilities were closed indefinitely Tuesday, and the NHL postponed four Sabres games as a result of Hall and Ristolainen entering the NHL's COVID Protocols.
Mittelstadt has one assist in two games played this year.
Yesterday, the NHL announced 12 revisions to the Buffalo Sabres' 2020-21 schedule. The list of changes can be found here.
Buffalo's next game is scheduled for Thursday against the Washington Capitals at 7 p.m. at KeyBank Center.
Throughout the 2020-21 season, the NHL is sharing the names of players who are "unavailable" to teams due to COVID protocols. This list is updated daily by the NHL.
These "COVID Protocol Related Absences" can be the result of a number of factors including, among others:
(1) an initial positive test which remains unconfirmed until confirmatory testing is completed pursuant to the Positive Test Protocol;
(2) mandated isolation for symptomatic individuals pursuant to the Positive Test Protocol;
(3) required quarantine as a high-risk close contact in accordance with the Positive Test Protocol;
(4) isolation based on a confirmed positive test result and/or;
(5) quarantine for travel or other reasons as outlined in the COVID-19 Protocol.
No additional detail will be provided either by the League or the team, including the precise reason a player is unavailable or how long he might be out.