He's sharp.

Yessir I knew and I let all my friends know every single day. Especially at my fellow Niner fans (let them know that the most in-depth football analysis is from a Davis guy).

O'Sullivan was in the League for 10 or 11 years with 11 different teams. You don't have that kind of longevity with that many different systems without being razor sharp.

Had his big chance with San Francisco when Mike Martz tried to make J.T. the next Kurt Warner, but it didn't take...by then the League had figured out Martz' system, and compounded with way too many mistakes, namely turnovers, and a relatively poor offensive line - Sully was benched, and that more or less was the final shot in 2008 at a steady starting job.

Haven't there been several former UCD quarterbacks who were in the NFL for more than a cup of coffee and a handshake? Ken O'Brien, of course, JT, Mike Moroski, Scott Barry and ?

Went and poked around pro-football-reference and discovered thet they don't list Elliot Vallejo as an NFL player at all, nevermind one that graduated from Davis: https://www.pro-football-reference.com/schools/californiadavis/

Kevin Daft was on and off a handful of NFL teams, but I don't think he played any downs.

edit: he's not listed either, so that's probably why Elliot isn't listed--didn;t play any snaps.