Ullmark will start Game 2 at home against Toronto on Monday, Chris Johnston of The Athletic reports.
Ullmark stopped 17 of 19 shots in Tuesday's 3-1 loss to the Senators, with Ottawa's final goal getting scored into an empty net.
Ullmark will protect the home net Tuesday against the Senators, TSN 1200 Ottawa reports.
Ullmark will guard the road net Saturday versus the Penguins, Seth Rorabaugh of Tribune-Review Sports reports.
Ullmark turned aside 28 shots in Saturday's 3-2 overtime win over the Panthers.
Ullmark will patrol the home crease versus Florida on Saturday, Conor Ryan of The Boston Globe reports.
Ullmark recorded a 32-save shutout in Tuesday's 3-0 win over the Predators.
Ullmark will be in net Tuesday on the road against Nashville, per Adam Pellerin.
Ullmark is set to start on the road against Tampa Bay on Wednesday, per Joe Pohoryles of The Hockey News.
Ullmark will guard the road goal Saturday against the Flyers, according to Adam Kimelman of NHL.com.