When Seattle Seahawks receiver Paul Richardson made a miraculous, one-handed touchdown catch in his team's playoff opener, then followed it up with another acrobatic grab , plenty of folks watching the game on TV had one simple question: ''Who is that guy?''
Happens every season.
Because while even the most casual NFL fan is familiar with certain players on each team - Russell Wilson, the quarterback throwing to Richardson, for example - there are plenty of others on the roster who are relatively, or completely, unknown to even thorough fans.
They're not mysteries to their coaches and teammates, though.