No. 3 – 1980-91 Los Angeles Lakers
Boston’s arch-rival’s best run of wins came with a big overlap with one of their own, the Showtime-era Lakers going toe-to-toe with the Celtics in the 1980s.
The Lake show won 652 wins to 250 losses, giving them a .723 winning percentage. L.A. made it to eight Finals in this era, hanging four banners over the stretch.