MILWAUKEE — Christian Yelich welcomed hard-throwing prospect Ryan Helsley to the big leagues with a three-run homer, his eighth against St. Louis this season, to help send the Milwaukee Brewers to an 8-4 victory over the Cardinals on Tuesday night.

Lorenzo Cain and Yasmani Grandal each homered in a five-run third against Jack Flaherty (1-1), when the Brewers went up 5-0.

Yelich, who homered three times on Monday, was the first batter faced by Helsley, who debuted with two on and two outs in the fifth. Yelich fell behind 0-2, evened the count and then fouled off a 98 mph fastball, before sending the next pitch 427 feet to right center for his ninth home run.

Yelich is the first player to homer in six consecutive games against the Cards.