WR Moulds' status uncertain because of groin strain
"He's sore but it's really still too early to tell," coach Gregg Williams said of his star wide receiver.
Williams wouldn't say whether Moulds would be healthy enough to practice on Wednesday, when the Bills return to the field to prepare to face the Jets at the Meadowlands.
Moulds declined to talk after attending team meetings.
Moulds was hurt during the winning drive in Buffalo's 22-16 overtime win against Cincinnati on Sunday.
After coming down with a 28-yard reception at the Bengals 7, Moulds was tackled by Kevin Kaesviharn and tumbled awkwardly along the sideline.
Moulds was on his back and appeared to cover his eyes with his hands. He remained there as Travis Henry scored two plays later on a 2-yard plunge.
After the game, Moulds described the injury as "a slight pull," adding that he hoped to play next weekend.
Moulds' loss would be a severe blow to an offense that traded its No. 2 receiver, Peerless Price, to Atlanta last March. Buffalo's next two receivers, Bobby Shaw and Josh Reed, have struggled this season.
Against the Bengals, Shaw caught three balls for just 26 yards and Reed had one catch for 20 yards.
Moulds finished with nine catches for 99 yards. He ranks fourth in the NFL with 457 yards receiving.
This story is from ESPN.com's automated news wire. Wire index