The Chargers signed veteran free-agent OT Jon Runyan to a one-year contract Tuesday. Runyan replaces starting RT Jeromey Clary, who was placed on season-ending injured reserve with an ankle injury.

NFL Commissioner Roger Goodell on Tuesday sent a memo to the 32 teams updating them on some of the new developments in the league regarding concussions. The most interesting thing in the memo was that concussion committee co-chairs Drs. Ira Casson and David Viano have offered their resignations and they have been accepted by the league.

Giants RB Brandon Jacobs looks like a attractive fantasy option in Week 12.

Giants RB Ahmad Bradshaw is wearing a boot on his left foot after already dealing with a cracked bone in his right foot for the past six weeks.

Marty Schottenheimer, who played linebacker for the Bills from 1965 to 1968, refuted recent reports that he could return to Buffalo as the team’s coach.

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Thanksgiving games are already here. Can you guys believe it? The season is flying by. The best of the three holiday games is on our airwaves — the NFL Network is showing the Giants at Broncos matchup on Thursday night. Overall, this week’s slate lacks the playoff luster of recent weeks. Of course, we may have the game of the year on Monday night, but for the most part, this week is heavy on divisional matchups. Unfortunately, precious few of them involve two teams still realistically in the postseason picture. As always, we’ll start with the best of the bunch, and Happy Thanksgiving!:

As the Boston Globe’s Adam Kilgore points out, Bill Belichick is 1 for 5 this season in challenges, including going 0 for 2 vs. the Jets Sunday. Belichick has not successfully challenged a play since Week 2 at the Jets.

The UFL season is over — save for the title game — and with injuries mounting around the league, NFL teams are looking for reserves. In many cases, a player fresh off a competitive season might make more sense for clubs than a free agent who has not played since 2008, for instance.

Veteran kicker Jason Elam’s struggles have him on thin ice with the Falcons, who brought in four kickers Tuesday for a workout.

The Philadelphia Eagles have announced that they have signed offensive tackle Winston Justice to a contract extension that will run through the 2013 season.

As part of the NFL’s “flexible scheduling” plan, the Week 13 Minnesota Vikings-Arizona Cardinals game on Sunday, Dec. 6 will be played at 8:20 p.m. ET on NBC and the New England Patriots-Miami Dolphins game that day will move to 1:00 p.m. ET on CBS, the NFL announced Tuesday.

Tampa Bay Buccaneers rookie coach Raheem Morris will take over defensive play-calling duties after relieving Jim Bates as defensive coordinator, according to the St. Petersburg Times.

The 49ers formally dropped their tampering case against the Jets regarding rookie WR Michael Crabtree, according to a source with knowledge of the situation.

The Bills, who are expected to meet with Mike Shanahan this week about their head-coaching position, also have contacted former Super Bowl-winning coach Bill Cowher, according to league sources.