Duel

To encourage players to be more competitive, and if admins agree with this suggestion it may be possible to grant the winner something like 1.3x SP from the SP pool. If that player continues his winning streak the amount of the SP will increase by x%.

In order to lower the possibility that the method can be exploited. High level players will receive a low amount of extra SP against low level players.

Maybe Vermeer's dueling idea could be used as an alternative to ELO matches or as a stepping stone for newer players.