ALLEN PARK -- Starting defensive linemen Cliff Avril (quadriceps) and Corey Williams (groin) were back at practice today (Thursday) after sitting out Wednesday’s session.

Also returning after a day off were running back Kevin Smith (knee) and right guard Stephen Peterman.

Kicker Jason Hanson was on the field, wearing a helmet and going through kicking motions. He is expected to miss Sunday’s game which is why they signed Dave Rayner.

Still missing from practice were quarterback Matthew Stafford and linebacker/special teams Isaiah Ekejiuba.

The Lions (2-6) play at the Buffalo Bills (0-8) at 1 p.m. on Sunday.

(Follow me on Twitter @PaulaPasche.)