Alexander Ovechkin scored on the man advantage against the Rangers, giving him more power play goals (21) than the Sabres (20) this season.
The Capitals are playing their first game of the season without veteran defenseman Brooks Orpik, who sat out with a lower body injury.
Watch the Capitals take on the New York Rangers in Washington live online via NBC Sports Live Extra.
The Capitals' success against New York may hinge on the performance of their top line against the Rangers' top defensive pairing. (8 p.m. on NBCSN)
Capitals defenseman Mike Green participated in a full morning skate on Wednesday but will not play against the New York Rangers tonight at Verizon Center.