Wolanin tied it 2-2 at 2:50 of the third period when he scored on the rebound of Roy's initial shot. It was Wolanin's first goal since March 14, 2019, with the Ottawa Senators.
Kempe then gave Los Angeles a 3-2 lead at 9:36. As he attempted to corral a loose puck on a breakaway, the puck skipped over his stick and fooled Vanecek.
McMichael gave the Capitals a 1-0 lead off a give-and-go with Joe Snively at 7:58 of the first period. Snively, who is from nearby Herndon, Virginia, was making his NHL debut.
"That settles the nerves a little bit," Snively said. "Got a little confidence running."
Schultz pushed it to 2-0 at 13:47 of the second period. After his initial shot was blocked, he regained the puck and beat Sparks glove side from the left circle one second after a power play expired.
With the Capitals going 0-for-6 with the man-advantage, Alex Ovechkin remained tied with Dave Andreychuk (274) for the most power-play goals in NHL history.
"It was just crazy to be on NHL ice again and playing against the greatest goal-scorer of all time and having an answer," Sparks said.
NOTES:Anze Kopitar had the secondary assist on Lizotte's goal to tie Wayne Gretzky (672) for second-most in Kings history. Marcel Dionne is first with 757. … Los Angeles forward Phillip Danault and Washington forwards T.J. Oshie and Michael Sgarbossa were placed in NHL COVID-19 protocol prior to the game. … Ovechkin's seven-game point streak ended (three goals, seven assists). … Snively is the first player from Virginia to play for the Capitals.