Since the start of head coach Kyle Shanahan's tenure in San Francisco, several analysts have made the claim any quarterback can succeed in his system.
The claim resurfaced after San Francisco's Week 2 win over the New Orleans Saints. Backup quarterback Mac Jones filled in for the starter, Brock Purdy, and put together a solid outing, completing 26 of his 39 passes for 279 yards and three touchdowns.
Because of Jones' performance, not only has it made a strong case against Purdy's production and "elite" status, but it adds to the idea that any quarterback can succeed with Shanahan calling plays.