The San Francisco 49ers worked out seven free agent quarterbacks Tuesday including veterans Landry Jones, E.J. Manuel, Kellen Clemens, Tom Savage and T.J. Yates. The two other participants were Matt Simms and Kyle Allen. [...]

This article references Kellen Clemens and more! Los Angeles Chargers backup quarterback Kellen Clemens is possibly looking at his first start in years. Starting QB Philip Rivers is in the concussion protocol and considered questionable at this point, so Clemens is preparing for the possibility that he may have to step in and lead the team against the Bills. The good news there is that Clemens is likely available everywhere and will be surrounded by weapons such as Keenan Allen, Melvin Gordon, Travis Benjamin, Hunter Henry, and Antonio Gates. [...]Keep on reading: Kellen Clemens A Possible Starter Sunday

We always talk about guys missing time with bye weeks and having to scramble to find a replacement. But the bye weeks are over. Then there are the guys on the injury report, and when they go down, you find yourself in a fix. I'm looking at you Arian Foster, Julio Jones and Aaron Rodgers. Those three derailed fantasy seasons all on their own. There are also guys that simply underachieve. I'm not talking about 12th rounders. I'm talking about guys you targeted in your draft or in a trade. Two words: Trent Richardson. The guy was a first-round pick and he's been triggering gag reflexes for 11 games. Ray Rice has been a mess this season. David Wilson was a disappointment when he was able to suit up, and now he's done for the season. So it's Week 13, it could be that you finally need to take a chance on someone rather than go down with the S.S. Roddy White. Some may want to "dance with the guy you came with," but if he brought you to the dance on the back of his tricycle, I think you can ditch him at the punch bowl. Below, I'll list a player with some upside for this week, their Week 13 matchup, and the percentage of leagues in which he is owned according to our friends at fleaflicker.com . DISCLAIMER - The hope is that you don't find yourself in a situation like this. The hope is that you dodge the bullet. But hope won't help you come Sunday. Let's move on to this week's targets, keeping in mind that these aren't every week starters. Instead, these are guys that should only be used if you're in some kind of roster emergency. In case of emergency, break glass. Quarterback Josh McCown at Minnesota -- 23 percent. McCown has done a nice job filling in for Jay Cutler. With Cutler still on the mend, the Chicago Bears will look to McCown once again in a big divisional game in Minnesota on Sunday. Coming off a game in which he topped 300 yards and threw two touchdowns, McCown will look to keep the Bears atop the NFC North. Working in his favor is the fact that no team has been more generous to opposing fantasy quarterbacks than the Vikings, and that Bears defense hasn't been stopping anyone lately. We project 330 passing yards and two scores for McCown. Ryan Fitzpatrick at Indianapolis -- 20 percent. Like McCown, Fitzpatrick has filled in adequately, stepping in when Jake Locker was lost for the season. He has no problem slinging it around the yard, but his challenge has always been decision-making. You'd expect more from a Harvard graduate, but he throws...

There are a few tweaks to the "studs" lists this week as injuries and lack of performance keep things very fluid on the fantasy football landscape. Also, with six teams being on a bye, it leaves quite an eclectic group of players to grace this week's selections. Let's get to it ... QUARTERBACKS STUDS Peyton Manning Aaron Rodgers Drew Brees Matthew Stafford Philip Rivers * bye week * Michael Vick * may not play Week 8 * Cam Newton Matt Ryan Tony Romo Robert Griffin III Parting is Such Sweet Sorrow Tom Brady: It's stunning, but, even with the return of tight end Rob Gronkowski , Brady is a middle-of-the-pack fantasy quarterback. Eight touchdowns against six turnovers are not stud-worthy numbers. Brady is no longer a weekly must-start option. START Russell Wilson, SEATTLE at St. Louis: Wilson is on a roll rushing for an average of 67 yards per game the last four weeks and tossing five touchdowns in that time span. St. Louis is circling the drain and wide receiver Percy Harvin is returning to the Seahawks offense soon (possibly for this matchup). Wilson torches the Rams this week. Colin Kaepernick, SAN FRANCISCO ‘at' Jacksonville (in London): Eleven carries for 68 yards and one touchdown last week are the key numbers. Kaepernick ran the ball out of the read option as well by escaping the pocket and looked somewhat like the quarterback that took the league by storm last season. It's the Jaguars ... enough said. Ben Roethlisberger, PITTSBURGH at Oakland: The Steelers are getting their swagger back and now have a legitimate ground game to help set up play-action passes. Last season Roethlisberger lit up the Raiders for 384 yards and four touchdowns. Oakland's defense isn't any better this year so look for a very productive day for Roethlisberger. Andy Dalton, CINCINNATI vs. New York Jets: Over the past two games Dalton has put up more than 700 passing yards and tossed six touchdowns. He's spreading the ball around to every skill position and faces a Jets pass defense that has picked off only one pass in the past four games while allowing seven touchdowns. Ride the hot hand and get Dalton into your fantasy lineup. Terrelle Pryor, OAKLAND vs. Pittsburgh: It's all about Pryor's ability to pick up yards on the ground. He's averaging 57 yards rushing per game and that will serve him well against a Steelers defense that is allowing less than 200 yards passing per game. Pryor will do plenty of damage on the ground this week and finish with very ...

Kellen Clemens is expected to make his second straight start when the St. Louis Rams face the Pittsburgh Steelers on Saturday.

St. Louis Rams quarterbacks Sam Bradford and A.J. Feeley both sat out practice Friday, putting newly acquired Kellen Clemens in line to start Sunday's game against the Cincinnati Bengals.

The St. Louis Rams claimed quarterback Kellen Clemens off waivers from the Houston Texans.

The Houston Texans made a pair of roster moves Tuesday, cutting quarterback Kellen Clemens and placing punter Brett Hartmann on injured reserve.