Atlanta took the opener 6-3 as Olson homered for the fourth straight game and has won three in a row following a four-game slide.
Washington (62-90) reached 90 losses for the fifth straight year, a first for the Nationals/Montreal Expos franchise.
After the start of the second game was delayed two hours by rain, Sale walked none and lowered his ERA to 2.35. Tyler Kiney (6-3) followed with two innings of two-hit relief.
Drake Baldwin hit a go-ahead double off Mason Thompson (1-1) that went over right fielder Dylan Crews. Olson, who had been 0 for 4, hit his second triple this year and Ozzie Albies added a sacrifice fly.
Key moment
With runners on the corners, Ronald Acuña Jr. made a leaping catch at the wall to end the ninth and send the game to extra innings.
Key stat
This was the ninth MLB game this season to enter extra innings scoreless.
Up next
Braves RHP Hurston Waldrep (4-1, 2.78) faces Nationals RHP Brad Lord (5-8, 4.21) on Wednesday.
___
AP MLB: https://apnews.com/hub/MLB
The Associated Press
