Bryce Harper, still hearing boos at Nationals Park all these years later, doubled twice and singled in a run to back Aaron Nola’s 5 2/3 scoreless innings, helping Philadelphia beat Washington 4-0 on a chilly Friday night.

Another former player for the Nationals, Kyle Schwarber, contributed a two-run single in the second inning for the visitors.

Nola (1-1) allowed a pair of hits in the third inning and a total of four walks and otherwise was in command after allowing six earned runs in his first start of the season — so his ERA went way down, from 14.54 to 5.40.

Washington’s batters had zero hits after the third in front of a crowd announced at 21,374.

Harper won NL Rookie of the Year honors and the first of his two NL MVP awards while with Washington, before leaving for Philadelphia as a free agent after the 2018 season. The Nationals won the World Series the following year — and have finished in last place every year since.

Rockies 10, Rays 7 >> Ryan McMahon hit a walk-off grand slam after committing an error in the ninth inning that allowed Tampa Bay to score the go-ahead run, and Colorado rallied for a victory in its home opener. McMahon sent the first pitch he saw from reliever Jason Adam over the fence in right-center to set off a roar from the sellout crowd at Coors Field. After leading 6-2 in the ninth, the Rockies let the Rays take a 7-6 lead.

Orioles 5, Pirates 2 >> Ryan O’Hearn, Gunnar Henderson and Cedric Mullins homered, Grayson Rodriguez pitched 6 1/3 strong innings and Baltimore beat Pittsburgh to spoil a Pirates home opener that was played through occasional snow flurries.

BRAVES 6, Diamondbacks 5, 10 INNINGS >> Travis d’Arnaud singled off the left-field wall to drive home the winning run in the 10th inning and host Atlanta, who scored twice in the ninth, rallied late to win.