According to PFF, the Indianapolis Colts undrafted rookie free agent to watch is Southern Illinois running back Justin Strong—who was a recent minicamp invitee:
INDIANAPOLIS COLTS: RB JUSTIN STRONG, SOUTHERN ILLINOIS
The Colts’ UDFA class lacks some punch, but Strong is a curious case. The former Saluki had a monster game against Murray State in 2023, carrying the ball 13 times for 126 yards, with 102 yards coming after contact. If the Colts have done their due diligence, he could find his way into the backfield rotation in 2024.