http://www.nytimes.com/2008/02/21/nyregion/21golf.html?em&ex=1203829200&en=9c9070c4064e72a7&ei=5087%0A According to this Feb. 2008 NY Times article, the numbers of people who play golf has dropped from 30 million to 26 million. Also the number of golfers who play 25 times or more a year dropped from 6.9 million to 4.6 million. This article: http://www.tennis.com/yourgame/asktheeditors/asktheeditors.aspx?id=1430 says that in 2005 the number of people who play tennis was nearly 25 million. And 5.2 million play tennis 21 times a year or more. Now seeing as how those numbers are 3 years old -- it's possible that tennis is more popular than golf in the U.S. It's possible though that tennis numbers like golf is also declining. Apparantly studies are showing that more young Americans are fat and don't like physical activities of any kind. Maybe one day they'll figure out that 1 single wasteful golf course equals a couple hundred tennis courts. And while tennis isn't a cheap sport -- it's still far less expensive than golf and a number of other sports. Go tennis!