Week 8 Fantasy Football Rankings: Who Are the Riskiest QBs?

I know the world is infected with Tebowmania, but Denver Broncos quarterback Tim Tebow is one of the two riskiest fantasy plays in Week 8.

Tebow was awful for the first 55 minutes of Denver's 18-15 overtime win over the Miami Dolphins in Week 7. He finished the day completing 13-of-27 passes (48.1 percent) for 161 yards, with two touchdowns.

While that sounds somewhat promising, the Florida product was facing an awful, winless Dolphins team.

This weekend, the 5-2 Detroit Lions come to town riding back-to-back losses, and they are surely looking to put a hurting on someone. Tebow could be that guy.

One stat that has been overlooked from Tebow's performance against the Dolphins is the fact that he was sacked seven times. The Lions have one of the best defensive lines in football and they are sure to pressure the second-year quarterback constantly. 

Tebow is almost guaranteed to be running for his life on Sunday and the Lions are allowing just 204.6 yards per game through the air. He is not a solid fantasy start for Week 8.

Matt Cassel has had a very tough season. In six games so far, the 29-year-old quarterback has completed 108 of 170 passes (63.5 percent) for 1,106 yards, with eight touchdowns and seven interceptions. His passer rating of 80.7 ranks 22nd out of the 34 quarterbacks who qualify. 

In Week 8, Cassel and the 3-3 Kansas City Chiefs will welcome the 4-2 San Diego Chargers to town for a Monday night showdown. Despite having an uneven season thus far, the Chargers do have the league's third-best pass defense, allowing just 175.7 yards per game.

With the way Cassel played in Week 7—he finished with two interceptions and no touchdown passes—I don't expect him to bounce back this weekend. He is simply not worth the risk until the Chiefs prove they can consistently gain yards through the air and cut down on turnovers.