Fantasy Football Waiver Wire: QB | RB | WR | TE | PK | DT

If you are serious about winning your fantasy league football championship, it is important to stay on top of your fantasy football team throughout the course of the year.

Each week during the NFL fantasy football season, KFFL brings you its Fantasy Football Waiver Wire, which breaks down players to pick up in your league. Not being aggressive in picking up fantasy football free agents is not a wise move. Sometimes, even if you do not need the player for your starting lineup, it is wise to tuck the player away for depth as well as to block others from adding the player to their fantasy football team.

Note: Percentage of polled leagues in which player is available in parentheses

Fantasy football free agents: Watch list

These fantasy football free agents shouldn't be on your immediate list. They may have had a big week of production; they may show talent but are buried on the depth chart; they may have a chance to play sometime this season because of injuries. Still, fantasy football players must know who these players are for their potential contribution in the future.

Vince Young, Tennessee Titans (98 percent)

Whispers for a removal of Kerry Collins from the starting role are gaining volume. Head coach Jeff Fisher has denied considering a switch, but if the 0-4 Titans remain stalled, they may give Young a chance. Young's legs add to his fantasy potential. He's strictly No. 3 quarterback fodder but could wind up as a midrange backup if a change is made.

NEW - Daunte Culpepper, Detroit Lions (97 percent)

Quarterback Matthew Stafford (knee) is considered day-to-day because of a right knee injury. His kneecap reportedly popped out and then back into place in Week 4. Despite that, he might still play this week against the Pittsburgh Steelers.

Culpepper's value is contingent on Stafford's health. The vet replaced Stafford in the second half, completing six of 11 passes for 54 yards in just two series. As said, if Stafford can't go this week or for a long period, Culpepper could be worth adding in deep leagues as a No. 3 QB, possibly right away as a speculation if you're desperate. His matchups the next two weeks against the Pittsburgh Steelers and the Green Bay Packers aren't the most enticing, though.