From BR Bullpen
Kelvin DeJesus Herrera Mercado
- Bats Right, Throws Right
- Height 5' 10", Weight 190 lb.
 Biographical Information
Pitcher Kelvin Herrera was signed by scouts Daurys Nin and Rafael Vasquez for the Kansas City Royals in 2006. He made his pro debut with the DSL Royals in 2007 and reached the majors with the club in 2011.