#2 San Francisco 49ers (1981-98)
Super Bowls: 5
Super Bowl Appearances: 5
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Average Annual Win Percentage: .739
A decade of dominance and the birth of a dynasty ensued when Hall of Famer Joe Montana teamed up with coach Bill Walsh. Posting a stellar winning record each season, and winning multiple championships - the 49ers had their greatest run during the 80s and the 90s. Spanning different coaches and quarterbacks, the franchise somehow managed to keep their winning momentum intact - earning themselves a coveted spot in the greatest NFL dynasties list.