Brown carded nine birdies and one double-bogey -- on the par-3 8th hole -- at Green Valley Ranch Golf Club in Denver. His three-day total is 202.
Carbondale's Doug Rohrbaugh and Ryan Dillon of Desert Hills, Ariz., are tied for second, one stroke back of Brown.
Former Buff Derek Fribbs is tied for 16th after firing this third consecutive round of 1-under 70.
Another former Buff, Derek Tolan, and Boulder's Matt Schalk are tied for 28th. They are at 212.
Curren CU golfers Beau Schoolcraft and David Oraee are tied for 46th. Joining them at 214 is former Buff Luke Symons.
Rounding out the former CU players in the field are Ben Portie (tied for 61st) and Pat Grady (tied for 67th).
The tournament concludes today with $125,000 in prize money up for grabs.