How does one even begin to define what comprises a true sports dynasty? Do we examine the professional ranks, or do we expand our view to include amateur sports as well, whether it be college, high school, whatever? Are we arrogant enough to include sports on this side of the pond only, or do we cross the Atlantic to include football, cricket, etc., Do we consider teams only, or do we delve into such things as the Olympics, where a given country could be considered to be a dynasty in the way it has represented it's country at the Olympic Games (or even the World Cup even though it has been firmly established that the World Cup has less importance than the Olympic Games

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For the purpose of my discussion, I restricted my consideration to the professional sports teams, and I narrowed my focus to the big four on this continent: NBA, NFL, MLB, and NHL.
Honestly, my knee jerk reaction to the question was the Edmonton Oilers. Winning five Stanley Cups over a seven year period was impressive. Icing a team blocked solid with Hall of Famers, they won the Cup in '84 and '85. In all likelihood, they would have won it in '86 if Steve Smith hadn't scored into hos own net in the semis. '87 and '88 brought two more Cups, with one more to come in '90, after Pocklington essentially sold the Great One. However, once I thought about it, I figured I'd never sell the wrestlezone faithful on a NHL dynasty. Plus, how to distinguish them from the NY Islanders or the Montreal Canadiens, and trust me when I say this, I'm not giving the nod to the Canadiens, after all, I hate them, forever.
My heart wanted to say the Patriots of the past decade. However, with a 14-2 record this season being spoiled by an early playoff exit, at the hands of the Jets no less, and with their 16-0 flirtation with perfection spoiled by a fluky loss in the Superbowl, I could not in all good conscience pick them.
To me, a true sports dynasty has to win championships. It's not enough to just be there;you have to win. So don't try to convince me that the Buffalo Bills or Atlanta Braves had dynasties. Zero and one title, respectively, do not a dynasty make.
You have to win championships, and you have to string a bunch together. You have to have an uninterrupted streak of significance, and you have to do it over a period of at least approaching a decade or more. You have to do it with dominance, with attitude, with the kind of performance whereby everyone is gunning for you because you are clearly the best, yet despite this target, no one else can get it done. You have to be the clear favorite to win, and you have to be able to follow through, and if you don't, it has to be a truly shocking upset.
With these parameters in mind, the choice for me is the clear. It has to be the Boston Celtics of 1957-1969. A thirteen season spurt involving 12 appearances in the Finals, 11 titles, eight of which were consecutive spanning 1959-1966. A team featuring the legendary coaching prowess of Red Auerbach, and featuring such players as John Havlichek, Bill Russell, and Bob Cousy. In my opinion, 8 consecutive championships at the professional level cannot be discounted. With the parity seen amongst professional sports today, and with such factors as free agency and greed at play, I cannot imagine ever seeing a streak of this magnitude being equalled ever again.
I have been a lifelong fan of the Boston Celtics. When I think of this dominant franchise,I tend to think of Bird, McHale, Parrish, Ainge, and Johnson. These guys comprised a pretty dominant force for a while. The Celtics of the last several years have been no slouches either. But these two incarnations of the Celtics pale in comparison to the team from Beantwon from '57-'69.
Think of it this way. My second choice would have been the Chicago Bulls of the 1990's. With a three-peat in '91-'93, a two year hiatus while Jordan retired, followed by another three-peat from '96-'98, they were a pretty awesome team as well. Had Jordan not decided to retire prematurely, in his prime, in '94 and '95, chances are they may have won these two seasons as well. If everything else remained unchanged, that would have been 8 consecutive as well. But this is all hypothetical, all speculative, all conjecture. The Celtics did it. No what if's involved, they lived it, they accomplished it. Even if the Bulls had strung it from '91-'98, they still would have needed to pad these stats with 3 more titles, 4 more Finals appearances, 5 more years.
With all due respect to the Yankees, or the Steelers, or the Canadiens, or the Cowboys, etc., the choice is clear. The greatest dynasty, achieving a feat which will in all likelihood never be replicated, is the
Boston Celtics of 1957-1969 .