The Baltimore Ravens signed quarterback Joe Callahan July 29, after Robert Griffin III injured his thumb during practice July 17.
Here are five things to know about the Ravens' new backup quarterback.
1. He played under first-year Ravens offensive coordinator Greg Roman during high school.
Callahan, 26, hails from Cape May Court House, N.J., and he played his high school football at Holy Spirit High School in Absecon, N.J.
During his sophomore season, Callahan played under coach Greg Roman, who was named the Ravens' offensive coordinator this offseason.
