CHICAGO — Brent Seabrook scored on a booming slap shot 1 minute into the third overtime, and the Chicago Blackhawks beat the Nashville Predators 3-2 on Tuesday night in Game 4 of their first-round playoff series.

Seabrook’s long drive beat a screened Pekka Rinne on the 100th shot of the longest game in Nashville history. Rookie Scott Darling made 50 saves for Chicago.

The Blackhawks grabbed a 3-1 series lead and can close out the Predators with a win in Nashville on Thursday night.

Colin Wilson and James Neal scored for Nashville, which carried a 2-1 lead into the third period. Rinne finished with 45 stops.

Capitals 2, Islanders 1, OT

UNIONDALE, N.Y. — Nicklas Backstrom scored 11:09 into overtime to lift Washington to a victory, and even its first-round playoff series against the New York Islanders.

Alex Ovechkin also scored and assisted on the decisive goal, which came off a faceoff to the right of the Islanders net.

Red Wings 3, Lightning 0

DETROIT — Petr Mrazek made 22 saves for his first postseason shutout, and Pavel Datsyuk, Riley Sheahan and Luke Glendening scored for Detroit in a victory over Tampa Bay that gave the Red Wings a 2-1 lead in their playoff series.

The 23-year-old Mrazek was coach Mike Babcock’s choice to start in this series instead of Jimmy Howard, and the youngster has acquitted himself well.

Flames 3, Canucks 1

CALGARY, Alberta — Jiri Hudler had a goal and an assist and Calgary earned a win over Vancouver.

Calgary’s Johnny Gaudreau scored his first playoff goal and 18-year-old rookie Sam Bennett had his second in as many games.