Colts QB Anthony Richardson suffers shoulder sprain, expected to miss 4-6 weeks

Richardson injured his throwing shoulder during a run play in a Week 5 game against the Titans.
Initial diagnosis was a Grade 3 AC joint sprain, pending MRI confirmation.
Richardson previously missed games due to a concussion and knee injury earlier this season.
Backup QB Gardner Minshew replaced Richardson against the Titans and is expected to start going forward.
Richardson's timetable to return is uncertain, but he will likely miss the Week 6 matchup against the Jaguars.