The NFL rulebook is filled with weird technicalities that can make it hard to explain the sport to first-time viewers. Good luck explaining to a new fan in London what happened at the end of the first half Sunday between the Carolina Panthers and Tampa Bay Buccaneers. With just one second remaining in the second quarter, the Panthers attempted the league's first fair-catch kick in over six years, although kicker Joey Slye just missed a chance to put three more points on the board.