ALLEN PARK -- Ezekiel Ansah is now expected to play Sunday in the Detroit Lions' season opener against the Minnesota Vikings.

Ezekiel Ansah is expected to play Sunday against the Vikings.

The rookie defensive end, who sustained a concussion Aug. 24, was a full participant in Friday's practice and listed as "probable" for the game.

"Probable" means a player has a 75-percent chance of playing.

"I'm hopeful," Ansah said in the locker room of his chances. "But that's coach's decision."

Ansah is expected to start at right defensive end, if available, and Willie Young will be in the lineup if he's not.

Defensive end Jason Jones (knee) and safety Louis Delmas (knee) also were listed as probable.

In all likelihood, the Lions will open the season with every active player available. Tight end Michael Williams is on IR and fullback Montell Williams is on short-term IR (six weeks).

Defensive tackle Kevin Williams will not play for the Vikings because of a knee injury.