Lovejoy scored at 10:40 of the second period to tie it 1-1. On an odd-man rush, Bonino stickhandled through Capitals defensemen Nate Schmidt and Dmitry Orlov, who got tangled up with each other, and put a shot on net. Lovejoy tipped in the rebound for his first goal of the playoffs.
Malkin scored 57 seconds later to give the Penguins a 2-1 lead. He came off the bench, picked up a pass from Chris Kunitz and sent a backhand top shelf on Holtby. The goal was his third of the playoffs and eighth point in five games.
"This game could have went either way," Penguins coach Mike Sullivan said. "It was an even game. Our guys played hard. I thought we carried stretches of momentum for long periods of time. It didn't go our way. We'll learn from it, put it behind us and try to get Game 2."
Oshie tied it 2-2 at 12:10 with a breakaway goal. He picked up a turnover by Penguins defenseman Olli Maatta in the neutral zone, skated down the wing with speed, and beat Murray glove side for his second goal of the playoffs.