Rockbird tournament

It's tournament that is held every four years. The rules to the tournament is that there are four ship and in it you have to fight each other with only the Gem Ball and the last two in each ship can go to the real tournament in Rock Bird city. In the tournament two people will fight each other in a shpere where they no gravity and they have to use special shoes on they foot to move around and if the person O-Part is destroy or he quite or faith will win the round.