Jackson (ankle) was not present for Friday's practice, Jamison Hensley of ESPN.com reports.
With Jackson absent from practice all week, he'll likely be ruled out for Sunday's game against the Falcons. While Jackson could play without practicing, all signs continue to point to Tyler Huntley making the Week 5 start. Atlanta's defense has been wreaking havoc on opposing quarterbacks and would be a unit to stream at home this week against the backup quarterback if Jackson is ultimately ruled out.