The following countdown reveals 25 big-time NFL playmakers whose
fantasy values have declined since the preseason—for various
reasons.  As a result, each one could be had for a reduced-
market trade price before Sunday's slate of games, provided
prospective owners can push the right buttons during
negotiations.  For an in-depth slideshow of the top 10 players
to realistically pursue before Sunday, click here.  1. RB Chris
Johnson, Titans 2. RB Michael Turner, Falcons 3. WR Jordy
Nelson, Packers 4. QB Michael Vick, Eagles 5. RB Fred Jackson,
Bills 6. RB Ahmad Bradshaw, Giants 7. RB Steven Jackson, Rams 8.
RB Darren Sproles, Saints 9. QB Cam Newton, Panthers 10. RB
DeMarco Murray, Cowboys 11. WR Dez Bryant, Cowboys 12. TE Aaron
Hernandez, Patriots 13. QB Tony Romo, Cowboys 14. WR Marques
Colston, Saints 15. WR Jeremy Maclin, Eagles 16. QB Philip
Rivers, Chargers 17. RB BenJarvus Green-Ellis, Bengals 18. WR
Vincent Jackson, Buccaneers 19. QB Peyton Manning, Broncos 20.
WR Steve Smith, Panthers 21. RB Ryan Mathews