1. Can Maple Leafs netminder James Reimer outplay his Bruins counterpart, Tuukka Rask?
Rask hasn't faced the number of odd-man rushes that Reimer has had to put up with, but Rask was especially good in the two games in Toronto earlier this week. He was better than the Maple Leafs goalie with a .932 save percentage, which is fifth among goalies who have made four or more starts in the playoffs.
Reimer has a .914 save percentage after four games.
Reimer is in the midst of his first Stanley Cup playoff run and has played decent enough. But if there is one Maple Leafs player who has to step up as Toronto faces elimination, it's Reimer. He has to be better than Rask on Friday.
"He's not any different than any other player, there's more to give," Maple Leafs head coach Randy Carlyle said.
"We just want our goaltending to be good enough to win."
2. Who will replace an injured Maple Leafs defenceman Mark Fraser?
Fraser was knocked out the series when he took a puck off his forehead in the third period of the Maple Leafs 4-3 overtime loss on Wednesday. He underwent surgery for a facial fracture, but is back home resting comfortably, according to Carlyle.
Veteran John-Michael Liles, who hasn't played since the series opener, will replace Fraser in Game 5 and likely will play alongside his former Colorado Avalanche teammate, Ryan O'Byrne.
Carlyle remarked he will give more ice time to Cody Franson and Jake Gardiner, the Maple Leafs top defencemen from Wednesday's outing.
"We have to continue to find a ways to play at a higher level of hockey," Carlyle said.
Meanwhile, the Bruins will miss Wade Redden tonight. The veteran defenceman played well in Game 4, but has been deemed day-to-day with an undisclosed injury.
3. Can the Maple Leafs stop Bruins centre David Krejci and his linemates Milan Lucic and Nathan Horton?
Krejci became only the second player in Bruins history to score three or more
goals in a playoff game, including the overtime winner, on Wednesday. The only other Boston player to score a playoff hat trick was Jean Ratelle on May 3, 1979, against the Canadiens.
Krejci also was first visiting player to record a postseason hat trick in Toronto since Wayne Gretzky on May 29, 1993.
The line of Krejci, Horton and Lucic has combined for eight goals and 22 points in four games, including each of Boston's game-winning goals. Horton scored the game-winners in the series opener and Game 3.
Projected lines, defence pairings for Game 5
Joffrey Lupul -- Tyler Bozak -- Matt Frattin
James van Riemsdyk -- Mikhail Grabovski - Nikolai Kulemin
Clarke MacArthur -- Nazem Kadri - Phil Kessel
Leo Komarov -- Jay McClement -- Colton Orr
Carl Gunnarsson -- Dion Phaneuf
Jake Gardiner - Cody Franson
John-Michael Liles - Ryan O'Byrne
Starting goalie: James Reimer
Milan Lucic -- David Krejci -- Nathan Horton
Brad Marchand -- Patrice Bergeron -- Tyler Seguin
Rich Peverley -- Chris Kelly -- Jaromir Jagr
Daniel Paille -- Gregory Campbell -- Shawn Thornton
Zdeno Chara -- Dennis Seidenberg
Andrew Ference -- Johnny Boychuk
Matt Bartkowski -- Adam McQuaid
Starting goalie: Tuukka Rask
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