Greg Roman's wisecracking rise from high school coach to Ravens' offensive guru

OWINGS MILLS, Md. -- The Baltimore Ravens installed a play during training camp for a swing pass to a running back, and Joe Callahan felt like it was a flashback.

The receivers on the right side of the formation all ran crossing routes over the middle, which left the back wide open for a touchdown. Callahan, the Ravens’ third-string quarterback at the time, who played under offensive coordinator Greg Roman in high school, couldn’t wait to talk about what he saw after practice.

"Do you remember when we did this for Holy Spirit?” Callahan asked Roman.

"Yeah, we got two touchdowns against Immaculata,” Roman replied.

Roman would call that same play for one of the most prolific offenses ever in the…