No. 1 Washington Capitals at No. 5 Tampa Bay Lightning (Lightning lead series 3-0), 7 p.m. ET
Washington is trying to avoid becoming the third No. 1 seed to be swept in any round since conference seeding began in 1994 (2010 Sharks and 1995 Red Wings).
The Capitals have never extended a series past five games after trailing 3-0.
The Lightning have not advanced to the Eastern Conference finals since 2004, when they defeated the Flyers in seven games en route to winning the Stanley Cup.
Dwayne Roloson is 11-3 in conference semifinal series games.
According to the Washington Times, the teams are playing on back-to-back nights because the St. Pete Times Forum is booked Thursday for the University of South Florida's commencement ceremonies.
No. 2 Philadelphia Flyers at No. 3 Boston Bruins (Bruins lead series 2-0), 7 p.m. ET
The Bruins are trying to take a 3-0 series lead in the conference semifinals against the Flyers for the second straight year. Philadelphia rallied to win the series in seven games last postseason.
Boston is 0-for-28 on the power play this postseason but 4-0 in overtime games.
Nathan Horton has three points in overtime in the playoffs. In the past 20 years, only three players have recorded four points in overtime in a postseason (Jarome Iginla in 2004, Adam Oates in 2003 and Ray Ferraro in 1994).
The Flyers' James van Riemsdyk leads the NHL this postseason with an average of 6.6 shots on goal per game.
No. 2 San Jose Sharks at No. 3 Detroit Red Wings (Sharks lead series 2-0), 8 p.m. ET
This year's series is mirroring last year's conference semifinals series between the Sharks and Red Wings with San Jose winning the first two home games by one goal. The Sharks won Game 3 in overtime last year.
The Sharks have 12 playoff wins against the Red Wings, one short of the team's most postseason wins against an opponent. They have 13 wins against the Avs.
Detroit averaged 4.5 goals per game in a sweep of the Coyotes and has two total goals in the first two games against the Sharks.
San Jose went 2-0 in Detroit during the regular season.