Steve Young – 1994
Young had the unenviable task of replacing Joe Montana but he exceeded expectations. In the end, fans regarded him as one of the Niners’ greatest-ever quarterbacks. He even won two MVP awards across his career. The first came in 1992 but arguably his most impressive victory was two years later.

The signal-caller had an outstanding 70.3% pass completion rate. Meanwhile, he threw for almost 4,000 yards with 42 touchdowns. Amazingly, Young showed no signs of becoming an elite quarterback before he broke out in San Francisco. It’s one of the great comeback stories in NFL history (via UPI).