Which Patriots receiver, undrafted out of Texas Tech, led the NFL in receptions three times?

In which round did the Steelers draft Antonio Brown in 2010? In which round did the Seahawks draft Richard Sherman in 2011? Which future Hall of Fame quarterback started his pro career in the Canadian Football League after going undrafted? Which Chargers tight end never played college football, only college basketball? Head coach Don Shula is most closely associated with which team? Head coach Tom Landry is most closely associated with which team? Head coach Chuck Noll is most closely associated with which team? Head coach Bill Walsh is most closely associated with which team?