ENGLEWOOD, Colo. --The Broncos promoted practice-squad member Taurean Nixon to the 53-man roster Saturday in advance of Sunday night's game at Oakland.
Tight end John Phillips was released to make room for Nixon.
Injury concerns necessitated the move. Starter Aqib Talib will miss his second consecutive game Sunday because of a lower back issue; he received an injection late this week after getting a second opinion on his back Thursday in California.
Reserve Kayvon Webster was ruled out on Saturday after a week in which he did not practice until Friday. He had been listed as questionable.
The injuries left just three healthy cornerbacks -- Chris Harris Jr., Bradley Roby and Lorenzo Doss -- prior to Nixon's promotion.