Game 4 photo gallery: Penguins vs. Capitals

The Penguins' Sidney Crosby balances the puck on his stick after a whistle during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins celebrates Jake Guentzel's goal against the Capitals in the second period during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Capitals' Alex Ovechkin skates off the ice after the Capitals lost to the Penguins 3-1 during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Penguins' Sidney Crosby moves the puck up ice during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

Penguins fans celebrate after a goal in the second period during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins celebrate after a goal in the second period during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Sidney Crosby looks to pass the puck during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins Kris Letang exchanges words with Washington Capitals' captain Alex Ovechkin during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Washington Capitals score a goal in the second period during the Penguins game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins’ Jake Guentzel attempts to shoot he puck during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Justin Schultz looks to pass the puck during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Jamie Oleksiak and Brian Dumoulin combine to upend the Captials' Devante Smith-Pelly during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Evgeni Malkin dives to put the puck behind Capitals goaltender in the second period during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Penguins' Sidney Crosby feeds the puck to Jake Guentzel for the game clincher against the Capitals in the third period during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Penguins' coach Mike Sullivan instructs Riley Sheahan on the bench during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Jake Guentzel looks to shoot the puck on goal during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

Penguins fans react to the confirmation of Evgeni Malkin's goal against the Capitals in the second period during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Penguins' Brian Rust checks Capitals' Alex Chiasson during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Derick Brassard looks to shoot during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Jake Guentzel beats Capitals goaltender Braden Holtby in the second period during Game 4 on Thursday.

The Penguins' Evgeni Malkin moves the puck up ice during their game against the Capitals at PPG Paints Arena on May 3, 2018.

The Capitals' Alex Ovechkin's hits the Penguins' Sidney Crosby during their game inside of PPG Paints Arena on May 3, 2018.

The Penguins' Evgeni Malkin moves the puck up ice during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Kris Letang moves the puck up ice during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

The Penguins' Phil Kessel moves the puck up ice during their game against the Capitals inside of PPG Paints Arena on May 3, 2018.

Penguins trainer Chris Stewart checks out goaltender Matt Murray in the second period during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Penguins' Riley Sheahan defends on the Capitals' Alex Ovechkin in the second period during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Penguins' Sidney Crosby can't get the a rebound off Capitals goaltender Braden Holtby in the first period during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Penguins' Evgeni Malkin loses his edge as the Capitals' Nicklas Backstrom defends on him in the first period during game 4 of round 2 Stanley Cup Playoffs on Tuesday, May 3, 2018, at PPG Paints Arena.

The Capitals' John Carlson defends on the Penguins' Sidney Crosby in the first period during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.

The Penguins' Jake Guentzel celebrates his goal in the third period against the Capitals during game 4 of round 2 Stanley Cup Playoffs Tuesday, May 3, 2018 at PPG Paints Arena.