Green (back) did not practice Wednesday, Matt Barrows of The Athletic reports.
Green injured his back in the second half of the 49ers' win over the Raiders in Week 9, and he finished that game with four tackles (two solo) and one interception. Per Barrows, head coach Kyle Shanahan indicated Monday that Green is considered day-to-day, so the third-year defensive back's practice participation over the next two days will determine whether he'll be available for Sunday's game against the Cowboys.