1. It must be a competition. No ties allowed.
Interesting. You realize that this one eliminates football, right?
Which football? We have an international crowd here.
American football. At least in the NFL. Not sure whether college rules are different, but ties in NFL games are allowed.
But each game is only part of the competition; at the end of the season, there's still only one winner of the Superbowl.
Likewise in soccer (in the UK), a single game may be a draw (which earns a point for each team), but after 40-odd games in the season, only one team wins the championship. And in major tournaments such as the World Cup, there may be draws in the group stages, but in the knock-out rounds, penalty shoot-outs are used to force a conclusion.
Test Cricket, however, is another matter. Many Americans have told me that they really don't understand the idea that two teams would engage in a stand-alone competition which involved five matches, each of which might last five days - so that's almost a solid month of competing - and that the Series can end in a draw.
Each Test Match might end in a draw - so the Series would be drawn 0-0.
Or each team might win two games and draw the other - so the Series would be drawn, 2-2.
I admit it's bizarre. In fact, I can't think of any other sports that do this.
But it's still a sport, Screw.