Thunderdome
From QWiki
Thunderdome is an online QuakeWorld 1on1 deathmatch competition that uses a division system for 8-16-32 players about same skill with a double elimination in each.
Quarterfinals
Semifinals
Winners' Finals
Losers' Round 1
Losers' Round 2
Losers' Round 3
Losers' Round 4
Losers' Semifinals
Losers' Finals
Grand Finals