The leading poly sire is...

[sumitas]

from 8/6/06 - 1/10/07 win% with at least 10 starts ---data from ALL WEATHER TRACKS ONLY
HADIF 45% from 11 starts and 5 wins--2 runners
http://www.pedigreequery.com/hadif

40% from 10 starts and 4 wins WELBRED FRED is 2nd--2 runners
http://www.pedigreequery.com/welbred+fred

UNBRIDLED JET 39% 28 starts 11 wins--6 runners
http://www.pedigreequery.com/unbridled+jet

STORM AND A HALF 38% 16 starts 6 wins--9 runners
http://www.pedigreequery.com/storm+and+a+half
source:thoroughfax

DISTANT VIEW 36% 14 starts 5 wins--5 runners
http://www.pedigreequery.com/distant+view2