Sport : Play, Do, Go

 Play    is used with ball sports and competitive games where you play against another person.

          It means to take part in a game which is played with rules.

          I often play tennis.   TENNIS is a ball sport.

          Do you play poker?   POKER is a competitive game.You play to win.

Do     is used for recreational activities and a non team sport. You don't use a ball.

         Peter does karate every day.

         I do a crossword puzzle in my free time.

Go    is often used with activities that end in -ing. You go somewhere to do something.

        I am going fishing tomorrow.

        Do you go skiing?