The new-look XFL has been around for just one weekend, but football fans already think that the NFL can learn a thing or two from the upstart league and its unique set of rules.
Mainly, people were fascinated by the XFL's substitute for an onside kick.
While teams are still allowed to attempt an onside kick, they can also attempt to convert a 4th-and-15 play from their own 25-yard line in order to keep possession.
This was demonstrated Sunday in a matchup between the St. Louis Battlehawks and the San Antonio Brahmas. Down 15-3 with 3:02 remaining in the game, the Battlehawks were able to rally for an 18-15 victory, thanks in part to one of those 4th-and-15 conversions that led to the game-winning touchdown with 16 seconds remaining.