Athlon Sports' weekly rankings of NFL teams. The San Francisco 49ers have moved into the top spot after knocking off the previous No. 1 New England Patriots, while no team is playing worse than the Kansas City Chiefs, who were blanked by the Oakland Raiders for the second time in history this weekend.

Here are our NFL Power Rankings following Week 15 of the season:

It’s fantasy football Super Bowl time. This week, the majority of leagues across the country will crown a champion who will win bragging rights, trophies, a few dollars, a trip to Vegas, who knows? And while every league is different, there are several key players acquired throughout the season who push a contender over the top, regardless of scoring, league size or any other variable.

As 2012 comes to a close, Athlon will count down the top individual performances in each major sport from the year, culminating with a full list of the top 50 performances of the year.

It is important to remember that for the NFL, 2012 started with the end of the 2011 regular season and the playoffs, in addition to the first 15 weeks of the current season. That’s why Tom Brady’s record-tying performance against Denver in last season’s AFC Divisional Round comes in at No. 1 on this list, even though the game was played back in January.

NFL football is the greatest reality TV program of all time. The Giants and Colts made sure of that back in 1958. Each NFL fall weekend is a completely new and original experience for every player, fan and coach alike. New stories, new personalities, new winners and new losers. And new statistics.

Here are the most important, most intriguing and most bizarre statistics from Week 15 of NFL play:

When Robert Griffin III limped off the field last Sunday, it figured to be a devastating injury for the Washington Redskins. He’s their most dynamic player and the reason they’ve made a race out of the NFC East. His loss would’ve changed the outlook of the entire division.

Athlon Sports' weekly rankings of NFL teams. The New England Patriots have moved into the top spot after knocking out previous the No. 1 Houston Texans, while no team is playing worse than the recently humiliated Arizona Cardinals.

Here are our NFL Power Rankings following Week 14 of the season:

Athlon Sports' weekly rankings of NFL teams. The Houston Texans remain the top team, while the Jacksonville Jaguars moved back to the bottom this week.

Here are our NFL Power Rankings following Week 13 of the season:

Athlon Sports' weekly rankings of NFL teams — from the best, one-loss Houston Texans, to the worst, the autograph-seeking one-win Kansas City Chiefs.

Here are our NFL Power Rankings following Week 12 of the season:

Athlon Sports' weekly rankings of NFL teams — from the best, the one-loss Houston Texans, to the worst, the miserable one-win Kansas City Chiefs.

Here are our NFL Power Rankings following Week 11 of the season: