49ers revamped the offense over last 4 years
The 49ers went with Jimmy Garoppolo under center in Super Bowl 54, while offensive weapons like Deebo Samuel, George Kittle and Kyle Juszczyk are still there.
However, the 49ers have added MVP candidate Christian McCaffrey to the fold a season and a half ago via trade, while fellow running back Elijah Mitchell has also produced for the backfield.
Other offensive contributors like Raheem Mostert, Kendrick Bourne and Emmanuel Sanders have since departed, as has Garoppolo.
Now, the second-year breakout quarterback Brock Purdy takes the field on the NFL's biggest stage.