Caglianone smashed a double down the right-field line off St. Louis Cardinals starting pitcher Miles Mikolas. The hit came in the fourth inning of Game 1 of Thursday’s Major League Baseball doubleheader.

Royals rookie outfielder Jac Caglianone got a pair of firsts out of the way with one swing of the bat Thursday, but the Royals could go on to fall 6-5 in the first game of a doubleheader Thursday.

The Royals’ best prospect since Bobby Witt Jr. is on his way to the Major Leagues, as the club called up top prospect Jac Caglianone on Monday morning. It sets the stage for the slugging first baseman/outfielder’s big league debut on Tuesday in St.