What happened: Dallas Cowboys rookie defensive back Caleb Downs participated in individual drills during Thursday's practice while advancing through the NFL concussion protocol. Before joining position work, he completed conditioning with team director of rehab Britt Brown.

Why it matters: Dallas is preparing for a Week 9 road matchup against Indianapolis following a 33-30 loss to the Arizona Cardinals. Clearing protocol would provide stability to a Cowboys secondary seeking its first interception of the season.

What to watch: The Cowboys will monitor Downs' practice participation Friday to determine his game status against the Colts.