http://www.latimes.com/sports/colleg...,5201434.story

After four weeks of mild frustration, USC quarterback Matt Barkley apparently could not help himself.

An inexperienced offensive line has been unable to fuel a consistent running attack or stem a pass rush during
spring practice. The receiving corps has been thinned on various days by injuries and disciplinary issues.

So on Tuesday, Barkley momentarily steamed.

The junior uncharacteristically barked at a teammate after a walk-on receiver ran the wrong route during a scrimmage drill. Nothing unusual, perhaps, for some quarterbacks, but the perpetually upbeat Barkley has rarely
raised his voice in two years as the starter.