Matt Flynn is the presumptive starter for the Oakland Raiders for the 2013 season.

But the offense the Raiders will run under offensive coordinator Greg Olson remains a work in progress.

"We're doing a lot of motions and trying to get favorable matchups," Flynn said. "There are always deep options, but right now I think we're trying to get some completions, not force anything downfield and really kind of taking what they're giving us."

Flynn has just two NFL starts, which makes every practice critical.

"Every day he sees a little something new," Dennis Allen said. "We've thrown a lot at him, both from an offensive standpoint and what he has seen from our defense. I just want to see him continue to improve and get better. If he focuses on that, the rest will take care of itself."