"It was nice to get the win and the two points, and win the division," Grubauer said. "I think the last couple games we played in here weren't too good, so it's a momentum-builder for us."
RELATED: [Capitals clinch first in Metropolitan with win against Penguins | WATCH: All Capitals vs. Penguins highlights]
Washington allowed 15 goals in its previous two regular-season games in Pittsburgh -- an 8-7 overtime loss Jan. 16, 2017, and a 7-4 loss Feb. 2. In each loss, Grubauer replaced Braden Holtby.
On Sunday, Grubauer, 26, got the chance to show what he can do against the two-time defending Stanley Cup champions, the team that eliminated the Capitals in the Eastern Conference Second Round each of the past two seasons.
"It's nice to get the call not on the back end of the back-to-back," Grubauer said. "And other than that, it's just a game."
Holtby, who has started 59 of 60 playoff games for Washington since 2012, will start at the St. Louis Blues on Monday (8 p.m. ET; NHLN, TVAS, FS-MW, NBCSWA, NHL.TV), and Capitals coach Barry Trotz downplayed the significance of starting Grubauer over Holtby against the Penguins.
"We wanted both our goalies to both make a statement, and [Holtby] has done it all year and he's going to get a chance to do that [Monday]," Trotz said. "We want both our goalies going well and they are, so that's good on us. We wanted [Grubauer] to have a first start here because he's never had a start here and go from there."