A collision at first base led to a spat between the Cardinals vet and a Brewers player — and a fiery postgame rant.

St. Louis Cardinals star Willson Contreras had a secret message for his teammates, but it won't make Brewers fans happy.

Willson Contreras took an explicit shot towards an unnamed Brewers player after the Cardinals' win over Milwaukee on Saturday ...

St. Louis Cardinals first baseman Willson Contreras' collision with Milwaukee Brewers baserunner Caleb Durbin sparked a war of words.