In the bottom of the first inning Saturday night, Vinnie Pasquantino was having trouble slowing his heart rate, seeing straight and keeping the contents of his stomach down, the latter of which he failed to do but at least made it off the field first.

Royals first baseman Vinnie Pasquantino reveals that he 'blacked out' during a heat-related illness on Saturday.

Royals first baseman Vinnie Pasquantino left Saturday night's 6-2 win over the Chicago White Sox with a heat-related illness after striking out in the first inning.