Watch: Gordon Hayward Ices Celtics' Sweep of Pacers

The Celtics completed the first sweep of the 2019 postseason.

The Celtics finished off the Pacers by completing a four-game sweep during their first-round matchup on Sunday. Boston won Game 4 110-106 behind an outstanding performance from forward Gordon Hayward, who compiled a team-high 20 points to help the Celtics advance to the next round.

Hayward, who played 34 minutes off the bench, went 7-for-9 from the field, including a perfect 3-for-3 from three-point range.

The veteran wing helped seal the result for the Celtics during the second half, delivering several key shots.

.@gordonhayward is feeling it! https://t.co/MT7GWrs8v8

— Boston Celtics (@celtics) April 21, 2019

C. US. RISE. https://t.co/tAIx4IvsNl

— Boston Celtics (@celtics) April 21, 2019

With 1:03 left, Hayward also drilled his third triple of the contest, giving Boston a 10-point advantage to clinch the victory. The win saw the Celtics become the first team to advance to the second round of the playoffs this postseason, in addition to being the first to sweep their opponent.

Hayward missed almost the entire 2017-2018 season after breaking his leg in the first game. The Celtics lost in the Eastern Conference finals to the Cavaliers. He returned this season, saying after the sweep "There's nothing worse than sitting there and not being able to play, in the playoffs espcailly.

"...After everything that happened last year, it makes it all worth it."