The Brewers, who don't have much room left to maneuver, scored in the second inning to take a 1-0 lead on the Cardinals, who don't have anything left to play for.
Consecutive singles by Travis Shaw, Domingo Santana and Stephen Vogt off Cardinals starer John Gant scored the run.
The Brewers' magic number for elimination is two; The Rockies, the team they are chasing, are up 3-0 on the Dodgers. A Rockies win would mean the Brewers can do no better than tie for the NL's second wild card.
Update on an earlier note: Adam Wainwright pulled rank on his teammates and came out to catch the first pitch from Blues right wing Vladimir Tarasenko on Blues night at the ballpark.