I remember him absolutely killing it during some preseasons for the Washington You-Know-Whos --
Brennan appeared in his first NFL exhibition game in the 2008
Hall of Fame Game against the
Indianapolis Colts on August 3. He was impressive in his debut completing 9-of-10 passes for 123 yards and 2 touchdowns for a 157.5
passer rating in the Redskins' victory.
[21] His success continued two weeks later against the
New York Jets when he completed 4-of-5 passes for 79 yards and scored the game-winning touchdown on a 33-yard pass to wide receiver
Jason Goode.
[22]
Brennan led all 2008 NFL rookies in touchdown passes, passing yards, and
quarterback rating through the preseason.
[23] He finished the 2008 preseason with a strong performance, going 36-for-53, for 411 yards and three touchdowns and with no interceptions. For the preseason, his completion percentage was 67.9% and his quarterback rating was 109.9.