He played his first college game against the San Diego State on September 5, 2009 in the Rose Bowl, where he completed two passes for 39 yards.

On October 2, 2010, Brehaut played in place of injured Kevin Prince and made 12 of 23 passes for 128 yards in his first career start.

[2] On November 26, 2010, Brehaut was 33-for-56 for 321 yards and three touchdowns, while running another score in on the ground against Arizona State University.

During this outing he also broke Troy Aikman's school record for passing attempts and completions,[3] though it has since been broken by Mike Fafaul.

[4] During the football season in the October game against Washington State at the Rose Bowl, he broke his left leg while running with the ball in the second quarter.