The current coach with the best ratio of games coached to premierships won is Mark Thompson. Because he has won 2 his ratio won't go up as fast as those with one premiership (Worsfold, Roos and Williams)!

Team	Coach	Games	Premierships	Games per Premiership
Geelong Cats	Mark Thompson	242	2	121
Hawthorn Hawks	Alistair Clarkson	122	1	122
Sydney Swans	Paul Roos	185	1	185
West Coast Eagles	John Worsfold	195	1	195
Port Adelaide Power	Mark Williams	266	1	266
Collingwood Magpies	Michael Malthouse	621	2	310.5
Brisbane Lions	Michael Voss	7	0	NA
Adelaide Crows	Neil Craig	135	0	NA
Western Bulldogs	Rodney Eade	277	0	NA
Carlton Blues	Brett Ratten	58	0	NA
Essendon Bombers	Matthew Knights	52	0	NA
North Melbourne Kangaroos	Brad Scott	7	0	NA
Fremantle Dockers	Mark Harvey	59	0	NA
Richmond Tigers	Damien Hardwick	7	0	NA
St Kilda Saints	Ross Lyon	79	0	NA
Melbourne Demons	Dean Bailey	51	0	NA