I think I covered all the scenarios with 6 teams left.
here we go....
Jason C. wins... if Ohio State wins it all... except in two scenarios (6 scenarios).
Oliver wins... if Ohio State wins over UCLA in the championship, with Georgetown and Oregon as the semifinalists (1 scenario).
Jason and Oliver tie... if Ohio State beats UCLA, with Georgetown and Florida as the semifinalists (1 scenario each).

Oliver wins if... UCLA wins over Ohio State in the championship (4 scenarios).
Tony and Scott tie... if UCLA wins over UNC in the championship (2 scenarios).
TDo wins... if UCLA beats Georgetown, with Florida and Ohio State in the semifinals. (1 scenario).
Charles wins... if UCLA beats Georgetown, with Oregon and Ohio State in the semifinals. (1 scenario).

Leon wins... if Florida wins it all (3 scenarios), unless....
Wynne wins.. . which would mean that Florida beat Georgetown in the championship, with UCLA and Ohio State as the semifinalists (1 scenario).

Leon can also win... if Oregon beats Ohio State, UCLA and UNC in the semifinals (1 scenario).
Oliver can also win... if Oregon beats Ohio State, UCLA and Georgetown in the semifinals (1 scenario).
Ellen wins if... Oregon beats North Carolina for the championship (1 scenario).
Charles wins if... Oregon beats Georgetown for the championship (1 scenario).

Ellen can also win... if North Carolina wins it all (3 scenarios), unless....
Jason W./Sherpas... wins if UNC wins over Florida, w/ UCLA and Ohio State in the semifinals (1 scenario).
(*sherpas, who are you? e-mail me.)

Daryle wins... if Georgetown wins it all (3 scenarios), unless....
Charles wins... which would need Georgetown to beat UCLA in the Finals, Ohio State and Oregon in the semis (1 scenario).