Pittsburgh Pirates closer Felipe Vazquez is being evaluated for left forearm discomfort after suffering his third straight blown save on Sunday.
Vazquez came on with one out in the eighth after St. Louis loaded the bases off Pittsburgh reliever Michael Feliz (0-2).
Harrison Bader fought off a 99 mph fastball from Vazquez and dumped it into shallow right field to tie the game at 4-4. Vazquez then walked Yairo Munoz on four pitches to force in the go-ahead run, and the Cardinals added another run on a fielder's choice for a 6-4 victory.