It also set the tone Wednesday.
Boston's No. 19 prospect and the Class A Advanced Salem Red Sox finished off the visiting Potomac Nationals, 10-0, resuming in the fifth inning a suspended game from the day before.
Bradley smacked a leadoff homer to kick-start the Red Sox's six-run first inning. Michael Almanzar collected the first of his three doubles in the eventful frame.
All told, Bradley went 2-for-3 to raise his early batting average to .375, while Almanzar, a 21-year-old corner infielder coming off a disappointing 2011, went 4-for-5 to increase his mark to .292.
Red Sox starter Miguel Celestino struck out a pair over four one-hit, scoreless innings Tuesday. His lone blemish: Michael Taylor's two-out double in the second inning.
His reliever on Wednesday, Keith Couch (4-2), came on and yielded just two hits over five scoreless frames to seal a three-hit shutout.
Both Celestino and Couch registered eight groundouts.
Nationals hurler Adam Olbrychowski (1-4) was charged with the game's first six runs on five hits and didn't make it out of the first inning Tuesday.
Later Wednesday, Salem also swiped Game 2 of the abbreviated double header, 6-2, which was called after 4 1/2 innings due to a drenched diamond.
No. 17 prospect Sean Coyle smacked a two-run homer off Robbie Ray (0-1). Coyle also struck a solo shot in Tuesday's first inning and has four longballs overall this season.
No. 7 prospect Brandon Jacobs went 3-for-3 with a double.