Union goalkeeper Andre Blake celebrates shootout win. (Mitchell Leff-USA TODAY Sports)

CHESTER, Pa. – The Philadelphia Union is one win away from going to MLS Cup.

Philly defeated beat Nashville SC Sunday evening at Subaru Park to advance to the Eastern Conference final of the MLS Cup Playoffs for the first time in club history. The Union won the shootout, 2-0, after playing to a 1-1 draw after 110 minutes.

Jack Elliott and Jack McGlynn buried their penalty kicks while goalkeeper Andre Blake made two saves in the 2-0 shootout victory. On Nashville’s final attempt, Walker Zimmerman put his shot far from goal.

The Union will play the winner of the New England Revolution vs. New York City FC conference semifinal on Sunday, Dec. 5 (3:00 p.m. ET / ABC, ESPN Deportes). If NYCFC advances, the conference finals would be hosted at Subaru Park. If the Revs win, they will host.

While Nashville SC struck first with a Hany Mukhtar goal in the 38th minute, the Union tallied the equalizer with the last kick of the first half. Eric Miller received a ball from Alistair Johnston and sent a cross to Mukhtar, who scored off a diving header.

Daniel Gazdag provided the tying goal in the second minute of stoppage time, scoring off a corner kick past goalkeeper Joe Willis.

“Cruel way to go out for sure,” Zimmerman said, adding that the. “locker room, as you can imagine, is pretty quiet, pretty disappointed, and I think that’s just because we know we have a really good team. We know we had a really good opportunity to move on. That was the expectation – to move on and to go another round further and keep pushing towards our first piece of silverware. And it’s always tough when your expectation is crumbled in and kind of flipped on its head.”