Kansas City Royals phenom Jac Caglianone combines incredible power at the plate with a risky approach, so what's his MLB ceiling?

Jac Caglianone rounded first base for the first time on Thursday, his Kansas City Royals jersey rustling in the wind at Busch Stadium. And he kept going. A loud ovation followed as he stopped at second base with a smile on his face.

The Kansas City Royals have promoted top prospect Jac Caglianone to the majors, the team announced Monday. Caglianone, the No. 6 pick in last summer's draft, could make his big-league debut as soon as Tuesday, when the Royals host the St. Louis Cardinals.