There are 122 franchises in the four major North American professional sports leagues, which makes the owners members of a very exclusive club.
While many of those owners got into the business out of a love of sports, owning teams can also be quite lucrative, especially in this era of skyrocketing television revenue.
However, some teams are better investments than others, with 34 teams increasing in value by at least $US500 million in the last ten years.
Using franchise valuations and revenue estimates from Forbes.com, these 34 teams have been the investments in recent years.
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