With week 10 of the NFL season upon us, each team has now played at least half of their schedule. Let's get nostalgic and take a look at some of the worst quarterback and running back performances of the year.

Quarterback

- Tarvaris Jackson, Vikings: Week 2, 20-17 loss to Detroit - 17-33, 166 yards, 0 TD, 4 Int, 26.4 rating. This type of performance, and his injuries, have led the team to sign Koy Detmer as a back-up.

- Rex Grossman, Bears: Week 3, 24-3 loss to Tampa Bay - 15-32, 195 yards, 0 TD, 3 Int, 27.5 rating. Griese would get the call soon.

- Jon Kitna, Lions: Week 5, 34-3 loss to Washington - 16-29, 106 yards, 0 TD, 2 Int, 34.6 rating, sacked 6 times.

- Gus Frerotte, Rams: Week 6, 22-3 loss to Baltimore - 19-36, 208 yards, 0 TD, 5 Int, 1 fumble, 30.6 rating.

- Quinn Gray, Jaguars: Week 7, 29-7 loss to Indianapolis - 9-24, 56 yards, 0 TD, 2 Int, 1 fumble, 11.1 rating. To be fair, he was came into the game in relief, but that 11.1 QB rating still sticks out.

- Kurt Warner, Cardinals: Week 9, 17-10 loss to Tampa Bay - 10-30, 172 yards, 0 TD, 2 Int, 26.0 rating

Running Back

- Cedric Benson, Bears: Week 1, 14-3 loss to San Diego - 19 carries, 42 yds, 2.2 avg, 1 fumble, long run of 11. The first of many bad performances by Benson.

- Julius Jones, Cowboys: Week 2, 37-20 win vs. Miami - 15 carries, 32 yds, 2.1 avg, long run of 7. Has seen less and less playing time.

- Larry Johnson, Chiefs: Week 3, 13-10 win vs. Minnesota - 24 carries, 42 yds, 1.8 avg, long run of 10

- LaMont Jordan, Raiders: Week 8, 13-9 loss to Tennessee - 12 carries, 16 yards, 1.3 avg, long run of 7. Since been replaced by Justin Fargas as Raiders starter.

- Willie Parker, Steelers: Week 9, 38-7 win vs. Baltimore - 23 carries, 42 yds, 1.8 avg, long run of 5. Parker's been great, but this was his worst game by far. Not that they needed him, as Roethlisberger and the Steelers defense took care of things.

(Photo: Flickr)