Jefferson (shoulder) participated in some team drills at Monday's practice, Eric Smith of the Vikings' official site reports.
Jefferson appears to have been limited in his return to practice, but in any case it's encouraging to see him back on the field handling team reps. The second-year pro sprained the AC joint in his left shoulder Aug. 6, but coach Mike Zimmer downplayed the severity of Jefferson's injury from the beginning. The timing of Jefferson's return to practice will provide him just under a month's time to ramp up his workload before Week 1. Of course, if Jefferson isn't back at full speed by the time Saturday's exhibition matchup against the Colts kicks off, the Vikings could opt to delay his preseason debut.