A person who trains you to play a sport is a trainer or a coach.
try out for a sport and you might get it
Player
The oldest sport is baseball in America
I think polo is an oldest animal sport
baseball is a team sport and can not be played alone so there for no single person can deem themselves the first person to play the game.
Kurt Thomas
Gordie Howe
Gary Anderson
Sean connory.
satchel paige is the oldest baseball person to play in an allstar game
Brett Favre