I have spent a lot of time trying to define what is a sport, to me.

In general I've come to define a "sport" as something physical that has an opponent that actively works against you.

Something physical that DOESN'T have an opponent acting against you, I prefer to think of as a competition.

E-sports is not what I'd consider sports, but the term works fine. E-competition doesn't have the same ring to it.

So, team sports like baseball, soccer, boxing, etc I consider sports.

Bowling, track+field, golf, I do NOT consider sports, I consider them a competition.

Chess is not a sport, it's a competitive game. Fight me it's not a freaking sport, it's chess.