Frank Gore, Colin Kaepernick and friends can give San Francisco fans a thrill that has only happened five other times since the first Super Bowl was played in January of 1967.
San Francisco is currently the home of the defending World Series Champion Giants. If the 49ers defeat the Baltimore Ravens on February 3, 2013 in New Orleans, then those same fans will also have the defending Super Bowl champions.
Only five other times in history had a fan base's football and baseball teams simultaneously held their league's highest honor in the Super Bowl era.
Before listing the other five, it is important to make two notes.
The Washington Redskins won Super Bowl XVII (played on January 30, 1983) and later the Baltimore Orioles won the 1983 World Series. At the time, Washington did not have a Major League Baseball team and many baseball fans from D.C. were indeed Orioles fans.
And in 1989, the Oakland Raiders were playing in Los Angeles and many fans in the East Bay followed the 49ers, who sandwiched the Super Bowl XXIII and Super Bowl XXIV titles around the Oakland Athletics' 1989 World Series Championship.
I decided not to include those in this list out of respect for the new Washington Nationals and the returned Oakland Raiders.
Now here are the Super Bowl and World Series winning cities than San Francisco hopes to join.