Explained: Fagnano endures rough first NFL start in Ravens' loss to Jags

Joe Fagnano made his first NFL start for the Baltimore Ravens

Wildcat formation

An offensive formation where a non-quarterback, often a running back, takes the direct snap

injured reserve

A roster list for players who are injured and unable to play for an extended period

trade deadline

The date by which NFL teams must complete player trades for that season

depth chart

A team's ranking of players by position showing who would play if a starter is unavailable