Just a quick note about participation, I don't think you have to have top American players in order to increase participation amongst the kids. American soccer is a good example. When I was a kid, the NASL had folded and the US national team was made up of mostly college players, so kids like me had no one to look up to. But by the mid-90's, soccer was one of the most popular youth sports in the country in terms of participation, the US had hosted the World Cup, and the MLS was being formed. And now, the MLS is still going strong and there are several national team players who play in top leagues in Europe. The key was getting loads of kids playing and at the same time getting local pro/semi-pro games that they could watch in person. Maybe tennis needs the same. Maybe there needs to be more open days where kids with no experience can go to local facilities and get a taste for the game. And at the same time, you could set up more minor professional tournaments and college matches with free tickets for kids so they can go watch good players in person. I got to watch Jim Courier (before he got to the top) play in a local tournament in my home town when I was a kid, but that tournament doesn't exist anymore. My home town also has a decent college team that has hosted the NCAA championships, but are they pushing to get kids watching their normal league matches?