The Boston Red Sox will promote top pitching prospect Brayan Bello to start Wednesday's game against the Tampa Bay Rays.
According to a source, Bello will be called up to replace Rich Hill, who is on the injured list with a sprained left knee.
Bello is the No. 4 prospect in Boston's farm system and the top-ranked pitcher.
In nine outings for the Triple-A Worcester, Bello is 6-2 with a 2.81 ERA.