Oakland Raiders cornerback Nnamdi Asomugha was widely expected to skip much or all of training camp and wait until shortly before the start of the season to sign the franchise tender.

Apparently those expectations were incorrect.

Adam Schefter of NFL Network is reporting that Asomugha reported to training camp this evening and signed the franchise tag, and he will be a full participant on the Raiders’ first day of training camp Thursday. His decision to sign the franchise tag means he’s guaranteed a base salary of $9.8 million this season, and he’ll become a free agent again at the start of the 2009 league year.

In 2006 Asomugha tied for third in the NFL with eight interceptions. In 2007 he had just one pick, mostly because teams almost always threw away from him.