In four years coaching the Oregon Ducks, Chip Kelly was a staggering 46-7, a tough out for any team facing him on a Saturday night.

In his second season with the Ducks, Kelly took his team to the BCS National Championship, where Oregon lost a close game to Auburn. Kelly's success with what was considered the fastest-pace spread offense in college football landed him a job with the Philaelphia Eagles.

Kelly's learning the hard way that it won't be as easy to win in the NFL as it was in the college ranks. Kelly took over Oregon after Mike Bellotti retired and turned the Ducks into a monster. For Kelly's offense to work in the NFL, he needed a roster with a mobile quarterback with superb arm strength, a shifty running back and a deep threat at receiver.

That's why the Eagles made so much sense for Kelly. Michael Vick, LeSean McCoy and DeSean Jackson are ideal components to his offense. He'd have even more help if Jeremy Maclin didn't tear his ACL during the preseason.

Philadelphia's offense has put up some big statistics thus far. The Eagles have averaged 461.7 yards per game with McCoy totaling 395 yards and two touchdowns already. Look out Eric Dickerson, that pace would put McCoy on a path for 2,107 yards this season.

Even so, the Eagles are 1-2 with back-to-back losses, not to mention that the Redskins win doesn't look as impressive anymore. Kelly is learning quickly that there's a much more level playing field in the NFL. Even the worst teams can compete at times.

Kelly's offense has had its share of successes so far. But that alone won't be enough if he's going to start winning the way he did at Oregon.

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Aaron Wilson covers the Ravens for The Baltimore Sun.