Rittich turned aside 15 shots in Saturday's 4-2 loss to Calgary.
The Islanders came out flat in the afternoon contest and found themselves in a 4-0 hole before finally getting on the board midway through the second period. Rittich has been shaky so far in January, going 1-2-1 in four starts with a 3.44 GAA and .840 save percentage as the No. 2 netminder behind Ilya Sorokin.