WASHINGTON — Tanner Roark pitched seven innings, Stephen Drew and Jayson Werth homered in the fourth and the Washington Nationals defeated the winless Atlanta Braves 3-0 on Wednesday night for their fourth straight victory.

Roark, who moved up a day when scheduled starter Stephen Strasburg was scratched due to illness, allowed four hits and three walks. Pitching on five days of rest, Roark (1-1) struck out four and left after 100 pitches.

Jonathan Papelbon pitched the ninth for his fifth save.

The Braves (0-8) are off to their worst start since opening the 1988 season with 10 losses.

Washington got three runs and four hits in six innings against Atlanta starter Matt Wisler (0-1).

The Braves were without outfielder Hector Olivera, who was placed on paid administrative leave by Major League Baseball after he was arrested and charged with assaulting a woman at a hotel outside Washington.

Atlanta's Freddie Freeman went 0 for 4, striking out twice, and is batting .080.

Drew, making his first start for the Nationals, led off the fourth inning with a homer to right center.

One out later, Daniel Murphy walked and Werth — who was batting .105 entering the game — hit a towering shot to center for his first home run.

Roark allowed base runners in five of seven innings but got Wisler to ground out with the bases loaded in the second, and he struck out Freeman with two out and two on in the fifth.

The Braves have lost 13 straight in Washington, matching their worst stretch on the road against one opponent (a 13-game skid at the Dodgers in 1951-52) since the then-Boston Bees lost 17 straight at the Cubs in 1935-36, according to STATS LLC.