These are the teams he had a losing record against:
Army (0-1)
Auburn (0-1)
Boise State (0-3)
Cal (0-1)
Kansas (0-1)
LSU (0-2)
Mississippi (0-1)
Navy (0-1)
Nevada (0-3)
Out of that list, the only teams LaTech should have had a legit shot against were Army and Nevada. Total losses from those teams accounted for most of his losses (14 of 20). Tennessee, this year, would have lost to most of the teams on that list. We'd have bested Army, Kansas and Nevada... might have beaten Cal, but they decimated the same UCLA team that beat us at home.
I'm not an out-and-out supporter/defender of Dooley. Really... we know little actual about him... but when you try to spout off his W-L record (17-20) lets keep in mind who those losses came against. I will say this: wins in that period against Army and at least 1 win against Nevada would make me more comfortable with Dooley, but Chris Ault at Nevada is not a bad coach by any stretch.