Burch Smith struck out 10 in seven innings to earn his first major league victory, Chase Headley and Tommy Medica homered, and the San Diego Padres beat the Atlanta Braves 4-0 on Sunday.
The Braves lead the NL East by 10 games over Washington. Atlanta opens a three-game series at Nationals Park on Monday night, and can clinch the division by winning twice there.
Smith (1-1) held the Braves hitless until pitcher Julio Teheran singled to lead off the sixth.
Smith allowed three hits and walked two. The rookie made his fifth career start -- he had a 12.41 ERA in his previous starts. He struck out seven of the first 13 Atlanta batters.
Teheran (12-8) gave up seven hits, four runs, no walks and struck out six in 6 2-3 innings.
Copyright 2013 Associated Press. All rights reserved.