WASHINGTON — Jackie Bradley Jr. drove in two runs, Eduardo Rodriguez struck out six in six innings and the Boston Red Sox beat the Washington Nationals 3-0 on Wednesday to complete a three-game sweep.

Rodriguez (10-3) allowed three hits and walked one. Craig Kimbrel worked the ninth for his 26th save in 28 chances, finishing a six-hitter.

The Nationals (42-43) have lost five in a row to fall below .500 this late in the season for the first time since being 60-61 on Aug. 21, 2015. The preseason NL East favorites held a players-only meeting after the game.

A throwing error by Adam Eaton on Bradley’s sacrifice fly and a wild pitch by Ryan Madson (2-4) in the seventh inning contributed to Washington’s 17th loss in 22 games.

Nationals starter Erick Fedde left one batter into the second inning with right shoulder stiffness. Manager Davey Martinez said Fedde was scheduled to have an MRI.