Downs (calf) was spotted on the field participating in Tuesday's practice, Jake Arthur of Roundtable.io reports.
Downs missed some practice time last week with what he termed as a "very minor" calf injury. The Colts will release their first Week 1 injury report Sept. 9, and if his activity Tuesday is any indication, Downs could be off the report entirely as the team prepares for its season opener against the Ravens.