He is against religion. http://www.gototennisblog.com/2009/11/16/rafael-nadal-ponders-the-great-mysteries-war-religion-and-roger-federer/
fabric
Federa, Nadal, Williams, are all quite forceful
Bright yellow.
It does reflect light, as anything does that you can see (a yellow tennis ball reflects yellow light and absorbs the other colors). However, it will not show you your reflection.
Rafael Nadal generates an impressive spin of around 3,000 to 6,000 revolutions per minute (RPM) with his forehand. This high RPM contributes to the heavy topspin that makes his shots particularly challenging for opponents. His unique technique and powerful stroke allow him to maintain this level of spin consistently throughout matches.
There were a few tournaments throughout the year of 2008 in tennis so there isn't really a valid champion for the year. But, here are some tournament champions throughout that year: U.S. Open - Roger Federer Wimbledon - Rafael Nadal French Open - Rafael Nadal Australian Open - Novak Djokavic
the most visible ball in tennis is red yellow.
yellow i think
Rod Laver, Tony Roche, and Arthur Ashe all ended up with tennis elbow. They hit the ball primarily with their wrists. This puts tremendous force on the elbow. Pancho Gonzales, Ken Rosewall, and Pancho Segura were immune to tennis elbow. They hit the ball from the shoulder down.
I believe Rene LeCoste invented a hand-cranked machine that propelled tennis balls, while Bob McLure reversed the motor on a vacuum cleaner to create the first commercially viable ball machine in 1970.
Under certain lighting conditions, a yellow table tennis ball will provide for better visibility than a white ball.