By night's end, the Caps were down to two natural centers in Eller and Dowd; Oshie and Michael Raffl filled in at the pivot position on two of the other lines. Eller finished the night with a team-high 25:49 in ice time.
After a lackluster start cost them in a 4-2 loss to the Flyers on Friday night, Washington was more assertive in the first 20 minutes of Saturday's rematch. Despite playing with a short bench and with a mishmash of lines again, the Caps got to their game earlier on Saturday and held a territorial and possession edge through a fast-paced first frame in which neither team was able to score.
Philadelphia was the better team in the second period, but the middle frame was also scoreless.
Early in the third, Philly's Scott Laughton staked the Flyers to a 1-0 lead. Philadelphia scored in transition after the Caps had been pressing for the first marker in Flyers territory. Laughton took a stretch pass from James van Riemsdyk and carried into Washington ice on a 2-on-1. He called his own number, beating Anderson at 3:42 of the third.
Washington had to kill off a Brenden Dillon minor to keep the Flyers close enough until Anthony Mantha could put the puck on a tee for Eller's tying tally at 19:20 of the third, spoiling the 28-year-old Lyon's bid for his first career NHL shutout.
In the overtime, the Caps had the better of the possession and the scoring opportunities, but they won it after losing a defensive zone face-off, regaining possession, and moving the puck up the ice.
Dowd carried into the Philadelphia zone along the left-wing wall, putting a lead feed to the front for Sheary, who had a step on his man. Sheary shot from in tight, and Lyon got piece of it, but was unable to prevent it from wobbling over the goal line for a Washington win.
"He played extremely well," says Flyers coach Alain Vigneault of Lyon's 38-save performance. "It was disappointing I'm sure for our whole group that we let that one slip away. It would have been another solid win for the young man.
"Unfortunately, we took the penalty there at the end that was in my opinion a borderline call. We killed it off, and they were 6-on-5 with [Voracek] stepping on and we left the middle open there, and they got a one-timer through him there. It's unfortunate, he played a real strong game for us tonight."
The Caps know they'll start the playoffs at home, and they'll host either Boston or the New York Islanders to start the first round.