Lance Lynn threw six strong innings in his 100th appearance at Busch Stadium, Jordan Walker homered and the St. Louis Cardinals beat the Pittsburgh Pirates 3-1 on Tuesday night.
Lynn (7-4) allowed one run on four hits and struck out five.
Bryan De La Cruz hit his 20th homer of the season, taking Lynn deep in the second inning.
Ryan Helsley pitched a scoreless ninth for his NL-leading 45th save in 49 chances.
Luken Baker had an RBI triple for the Cardinals in the third, and Walker put St. Louis ahead 2-1 in the fourth when he hit a 3-2 pitch into the left-field bleachers. Walker has four homers this season, all since he was recalled from Triple-A Memphis on Aug. 30.
RHP Sonny Gray (13-9, 3.75 ERA) was set to start for the Cardinals Wednesday night in the third game of the four-game series, 5:50 with the pregame and the first pitch at 6:45 on KIRX.