ALLEN PARK — Calvin Johnson has not officially been shut down for  Sunday’s game against the New Orleans Saints.

The Detroit Lions wide receiver missed last Sunday’s game at the Vikings with a sprained ankle. He has not practiced all week.

“You know I’ve been surprised before, he’s an unusual guy. Just talking to him yesterday after practice he’s feeling good and coming along. Miracles have happened,’’ coach Jim Caldwell said.

“It would be fairly close (to a miracle) in some cases, but in this particular case, he’s a different guy. These guys have an unbelievable tolerance for pain, their recovery is quick. He’s no different,’’ Caldwell said.

— Caldwell seems uncertain if  tight end  Eric Ebron will be ready to play on Sunday. Ebron tweaked a hamstring in Wednesday’s practice and didn't practice Thursday or Friday. “It’s a matter of how quickly he’s going to be able to rebound,’’ Caldwell said on Friday morning.

— If Ebron can’t go there’s a chance that Jordan Thompson could be signed from the practice squad. “In a role he could play, he’d end up serving in the capacity where typically Joe (Fauria) and Ebron both would have played and if that happens I think he’ll be ready for it.’’

— Fauria (ankle) has been out on the field watching practice this week, a sign of improvement.

— Captains for Sunday: Reggie Bush on offense; James Ihedigbo on defense and Isa Abdul-Quddus on special teams.

— Also missing from Friday's practice: Theo Riddick (hamstring) and Travis Lewis (quad).

(Follow @PaulaPasche on Twitter. Order her book,  “100 Things Lions Fans Should Know & Do Before They Die’’ here. It’s also available at bookstores.)