QB Christian Hackenberg is the new backup quarterback. The team announced it before Sunday's game in somewhat of a surprising move.
TE Jordan Leggett, the Jets' fifth-round pick out of Clemson earlier this year, was out Sunday with a knee injury. He hadn't practiced all week.
LB Bruce Carter has a sprained ankle and his availability for Sunday's game in Oakland is unknown.
WR Jeremy Kerley spent five seasons with the Jets, amassing 2,225 receiving yards, before playing for the 49ers last year.