Philadelphia 4, Pittsburgh 1
Brayden Schenn collected a power-play goal and two assists and Steve Mason finished with 46 saves as host Philadelphia completed a season sweep of Pittsburgh for the first time since 1983-84.
Washington 2, Detroit 1
Defenseman Mike Green scored one goal and set up another as visiting Washington clinched a postseason berth after Toronto edged Ottawa later in the evening.
Montreal 4, Florida 1
Tomas Plekanec and PA Parenteau each recorded a goal and an assist as visiting Montreal overcame an injury to leading scorer Max Pacioretty to regain sole possession of first place in the Atlantic Division.
Toronto 3, Ottawa 2
Peter Holland scored the decisive goal in the seventh round of the shootout as Toronto slowed Ottawa's playoff charge with its second home win over the Senators in nine days.
St. Louis 2, Chicago 1
Olli Jokinen scored his first goal in 23 games to snap a tie late in the second period and Jake Allen made 38 saves as visiting St. Louis moved into first place in the Central Division.