With Carlos Gomez sidelined with a hamstring injury Thursday, Brewers manager Ron Roenicke moved shortstop Jean Segura into the leadoff spot. Gomez had started the first eight games as the leadoff hitter.
Segura has appeared in the leadoff spot just 20 times in his career. He is batting .271 (23 for 85) with one triple, two doubles, six RBI, seven stolen bases and 15 runs in that span.
The Cardinals are starting John Lackey on Thursday. Segura is 3 for 3 in his career against Lackey.