Less than a minute later, Caps winger Tom Wilson was sent to the box on a questionable roughing call, giving the Pens a chance to restore their two-goal cushion.
Instead, the Caps drew even on a Lars Eller shorthanded strike. Oshie did great work at the Pittsburgh line to get the puck into the Pens' zone, and Nate Schmidt made an excellent feed to the front for Eller, who popped it home to make it 5-5 at 16:54.
Unfortunately for Washington, the Pens still had 47 seconds worth of power play time with which to work. Pittsburgh needed only 25 seconds of that time to get the lead back, doing so when Malkin completed his hat trick on a goalmouth scramble at 17:19. Trotz issued a coach's video challenge, alleging that Hornqvist interfered with Grubauer.
After looking it over, the officials upheld the goal. They ruled that Winnik caused Hornqvist to contact Grubauer before the puck had crossed the goal line, and Pittsburgh had a 6-5 lead to take into the third. Officials weren't as specific as to the cause of Hornqvist pushing Grubauer back into the cage once the initial contact had been made.
Early in the third, the Pens went back up by a pair when Crosby beat Grubauer on a back door tap in, taking a feed from Sheary at the 5:55 mark.
The Caps got a couple of quick power plays thereafter, and they shortened Pittsburgh's lead on the second of those extra-man chances. After Ovechkin pumped a hard shot on net, Oshie stretched out to get to the rebound before anyone in black and gold could do so. Oshie lifted a backhander over a sliding Murray to make it a 7-6 game with 10:31 remaining.
Washington made it 7-7 when Eller put an exclamation point on a sustained lunch bucket shift in the Pittsburgh end. Eller put back the rebound of a Dmitry Orlov point shot to square the score, and when he did so, a full 5:22 remained.
Neither team was able to light the lamp in that time span, but Sheary did so in the extra session, seconds after officials elected to overlook a rather blatant Crosby trip on Ovechkin on the first shift in overtime.
"That second period was one of the craziest periods I've been associated with," says Pens coach Mike Sullivan. "I don't even know how to assess it, just coming out of it. We'll digest it, but coming off three losses in a row against a really good team that's been beating teams handily, I really liked the way our guys competed."
"I just thought they had more urgency in the game," says Trotz of the Pens. "When they got that momentum, they just got more urgent on the game. And when they got ahead, then we got a little more urgent. It was a strange game."
Washington's nine-game winning streak died in the ashes of a wild affair on Monday night in Pittsburgh, and no one who witnessed it will forget it anytime soon.