Tyler Huntley, who played the second half against the Titans in place of Jackson, was joined on the practice field by third-string rookie quarterback Joe Fagnano.
Other Ravens who were not participating at the beginning of practice included cornerback Marlon Humphrey (calf), left tackle Ronnie Stanley (toe), wide receivers Zay Flowers and Rashod Bateman, outside linebacker Trey Hendrickson (finger), defensive lineman Calais Campbell, and guard Andrew Vorhees (foot).
Hendrickson, who had a finger procedure last week and missed the Titans game, was working out on an adjacent field. The 40-year-old Campbell has been taking Wednesday practice days off.