Updated

Chandler Jones never seems satisfied.

The New England Patriots rookie defensive end made an immediate impact in his first professional game four weeks ago, recording five tackles and a strip-sack that was recovered for a touchdown. Not enough.

The 21st overall pick out of Syracuse jarred another ball loose the following week and has a sack in three of his first four NFL games. Not content.

Jones on Thursday was named the NFL Defensive Rookie of the Month for September.

And guess what? There's still room for improvement.

"I feel personally that it's not good enough," he said as the Patriots (2-2) continued preparations for the Denver Broncos (2-2). "Even though they say I'm the rookie of the month for September, we still have a .500 record. That's just not good enough."