ALLEN PARK — Louis Delmas sat out practice today (Friday) after participating on Thursday on a limited basis.

The Lions free safety played in the Thanksgiving game after missing three straight with lingering knee issues. He underwent surgery on Aug. 7.

 Defensive tackle Corey Williams (knee) also did not practice. He has missed the last three games.

 Left tackle Jeff Backus was on the field stretching after a limited practice on Thursday.

 Cornerback Jonte Green, who had missed two practices with an illness, returned to work.

 Titus Young practiced again and is supposed to talk to the media Friday afternoon.

 The Lions (4-7) are 5-point favorites over the Indianapolis Colts (7-4). Kickoff is 1 p.m. Sunday at Ford Field.

(Paula Pasche covers the Lions. Follow her on Twitter @PaulaPasche. Read her Lions Lowdown blog at oplions.blogspot.com.)