http://www.burj-al-arab.com/tennis/
World's Top Tennis Stars At Burj Al Arab
In preparation for the Dubai Duty Free Men’s Open, tennis legend, Andre Agassi and the world No. 1, Roger Federer, couldn’t resist the temptation to have a friendly knock about on the world’s highest tennis court, the helipad of Burj Al Arab, the world’s most luxurious hotel.

Both players are in Dubai to compete in the US$1 million Dubai Duty Free Men’s Open, which is the first round of the two-week Dubai Tennis Championships.

 
(most pictures)
http://www.metacafe.com/watch/24667/dubai_hotels_tennis_court/

211 above the ground
located on the helipad & not designed to encourage use.

Hotel is 321 meters high.