Kansas City Chiefs TE Kevin Boss (head) did not participate in practice Friday, Sept. 28, and has been ruled out for Week 4.
Chiefs | Kevin Boss to miss Week 4

Detroit Lions WR Titus Young (knee), OG Rob Sims (knee), OT Corey Hilliard (elbow) and DE Lawrence Jackson (calf) are listed as probable for Week 4. Sims and Jackson were limited during practice Friday, Sept. 28, while Young and Hilliard fully participated.
Lions | Four players listed as probable

Detroit Lions QB Matthew Stafford (hip) fully participated in practice Friday, Sept. 28, and is listed as probable for Week 4.
Lions | Matthew Stafford probable

Detroit Lions TE Tony Scheffler (calf), LB Justin Durant (back) and SS Amari Spievey (groin) are listed as questionable for Week 4. Spievey did not practice Friday, Sept. 28, while the other two were limited.
Lions | Three players questionable for Week 4

San Francisco 49ers TE Vernon Davis (back) practiced in full Friday, Sept. 28, and is probable for Week 4.
49ers | Vernon Davis probable

San Francisco 49ers P Andy Lee (hand) and LB Patrick Willis (ankle) practiced in full Friday, Sept. 28, and are probable for Week 4.
49ers | Two probable

San Francisco 49ers WR Ted Ginn Jr. (ankle), RB Brandon Jacobs (knee) and DT Isaac Sopoaga (ankle, knee) are questionable for Week 4. Ginn and Jacobs were limited Friday, Sept. 28, while Sopoaga did not practice.
49ers | Three questionable

New York Jets FB John Conner (knee), WR Patrick Turner (hamstring), LB Bart Scott (toe) and LB Bryan Thomas (hamstring) were limited during practice Friday, Sept. 28, and are listed as questionable for Week 4.
Jets | Four players listed as questionable

New York Jets TE Dustin Keller (hamstring) was limited during practice Friday, Sept. 28, and is listed as questionable for Week 4.
Jets | Dustin Keller questionable

New York Jets WR Stephen Hill (hamstring) did not participate in practice Friday, Sept. 28, and is listed as doubtful for Week 4.
Jets | Stephen Hill doubtful