Lafreniere recorded an assist and three hits in Saturday's 4-0 win over the Red Wings.
Lafreniere has signed a seven-year, $52.15 contract extension with the Rangers on Friday, Vince Z. Mercogliano of USA Today reports.
Lafreniere (upper body) will play against Montreal on Tuesday, according to Mollie Walker of the New York Post.
Lafreniere is considered day-to-day due to an upper-body injury, Peter Baugh of The Athletic reports Monday.
Lafreniere scored a goal and added two PIM in Monday's 4-1 win over the Red Wings.
Lafreniere notched a goal and an assist in Wednesday's 6-0 win over the Penguins.
Lafreniere scored a goal in the final minute of Thursday's 3-2 loss versus Florida in Game 5.
Lafreniere netted a goal in a 3-2 overtime loss to Florida in Game 4 on Tuesday.
Lafreniere scored two goals on six shots and added three hits in Sunday's 5-4 overtime win over the Panthers in Game 3.
Lafreniere was held off the scoresheet in Wednesday's 3-0 loss to Florida in Game 1.