That's a fun time. We had the Sox 2004 WS championship bookended by back-to-back Super Bowls and let's just say that was a pretty fun year and a half for us Boston fans. 😀😀
You had basically a "New York" decade *. The biggest sigh of relief that I can think in any sport of was the 2004 ALCS. You were no longer the "other" east coast baseball team. Since 2000, you had the Bruins, Red Sox twice, and the Patriots dynasty. Of course, New York had the Giants in football in 2011 and 2007, Yankees twice in the 2000s, and Yankees three times in the '90s as well as a Giants win early in that decade.
Boston is the only other city I expect multiple wins from every single decade. You can have a dead Pats, Bruins, and Red Sox but then have the Celtics do well. Some towns have good runs like Chicago with Bulls, Dallas with Cowboys, or LA with Lakers but NY and Boston will, and have been top contenders for many decades.
That being said, no town comes close to NY when it comes to professional titles. They are big, rich, and a great place to have a team. Had the NY Giants of baseball and Brooklyn Dodgers stayed in NY, imagine then how many more championships and strong seasons they could add to what they already have in that region.
San Francisco's best decade was the '80s for me. We had four Super Bowls for 49ers and two for Raiders, three WS appearances (Giants once, A's twice with A's winning in '89), but unfortunately not much from the Oakland based Warriors. The '90s saw the A's getting into a WS, a SF Super Bowl victory, and some bright moments from San Jose Sharks and it wasn't the same for sports.
I hope the 2010s will fare as well as the '80s for San Francisco bay area. We just missed the SB for 49ers but do have two WS this early on. A's are a possible power but Raiders need help. I do hope the Sharks and Warriors can make a showing this decade. We do have a superhero in SF pitcher Tim Lincecum and he's a sports hero with 2 WS rings and 2 Cy Youngs similar to our Joe Montana with 4 Super Bowl wins and 3 SB MVPs. We had kind of an anti-hero in Barry Bonds (easily more jerseys than Montana and Lincecum combined) and his records are simply amazing but may not have been had he stayed clean. But even clean I think Bonds could have had a HOF career and there is no moment in any sport that was as insane as Bonds breaking the single season home run record. Some other channels were dead air and the roads had nobody on them. Everybody was talking about Bonds, either as a hero or a villain but there's no time I can think of when non-sports fans were talking so much about a sports figure. Surreal and a once in a lifetime experience over here.
Also what I would love to see are at least two SF 49er superbowl wins this decade, one each for our two QBs. I don't know if we will ever have a starter getting a ring and then have the backup getting a ring as was the case with back to back legends Montana and Young. What we had was the best QB of the '80s followed by the highest rated passer in NFL history (at the time of Young's exit from football). Yes, we have a QB controversy again but not on the same level.
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(from USNWR)
2. Boston - 34 Championships
Legendary coach Red Auerbach led the Celtics to nine NBA championships in 13 seasons between 1957 and 1969, making up more than half of the team's 17 titles. Boston's teams haven't been shabby of late, either—after an 86-year drought, the Red Sox were able to shake off the "Curse of the Bambino" in 2004, winning their sixth title. They added another in 2007. The Patriots won three Super Bowls in four years between 2001 and 2005, the Celtics won the NBA finals in 2008, and the Bruins won their sixth Stanley Cup in June. The Boston Braves also won a World Series in 1914 before moving to Milwaukee, then Atlanta.
1. New York - 55 Championships
With 27 World Series titles, the Yankees are America's most successful franchise thanks to a revolving cast of legends including Babe Ruth, Joe DiMaggio, Mickey Mantle, and Derek Jeter. But New York's other baseball teams have won titles as well. The Mets have two World Series wins, and the Giants and Dodgers won a combined five World Series before moving west. The Knicks have won two NBA finals, and the metropolitan area's three NHL teams—the Devils, Rangers, and Islanders, have won a combined 11 Stanley Cups. The football Giants have won seven NFL championships, including three Super Bowls. Behind quarterback Joe Namath's promise, the Jets won their only championship in 1968.