Further medical tests confirm that Chargers kicker Nate Kaeding suffered a torn anterior cruciate ligament and will be lost for the season, while DE Luis Castillo is out at least 10 to 12 weeks with a fractured tibia.

49ers WR Ted Ginn Jr.‘s restructured contract allows him be a free agent after this season, according to a league source. Ginn, who sparked the 49ers to their first win under new coach Jim Harbaugh with two return touchdowns, redid his contract a week ago. He is now set to make $1 million in 2011, with $400,000 available to him in incentives. Ginn had been set to make $1.4M in base salary in 2011, with up to $2.9M in escalators, and had a $1.8M base for 2012.

On the hunt for some depth in the secondary, the Miami Dolphins gave tryouts to defensive backs Mark LeGree and Darcel McBath on Wednesday, according to a league source. And in another free-agent visit, the St. Louis Rams tried out defensive back C.J. Wilson. In other league news,  four teams placed waiver claims on defensive back Darius Butler following his release from New England, according to a league source. Carolina, Denver, Jacksonville and San Francisco all placed claims on Butler, who was awarded to the Panthers.

Former Cowboys center Andre Gurode will visit the Lions on Friday, according to a source with knowledge of the situation.

NFL Network insider Jason La Canfora unveiled his mock draft Friday, projecting April’s top 10 picks.

The Patriots have the best coach and the best quarterback in the league, and finish the regular season at the top of weekly rankings.

With one week to go in the season, there were few changes at the top of my latest Go Go Power Rankings.

Following the Saints’ tough loss in Week 15, the Patriots are now No. 1 in my go-go power rankings.

Week 14 didn’t bring any major changes in my latest power rankings.