Most people are not aware that table tennis is a professional sport. Game play can be very intense and also provide a great workout. Most metro areas of the country will have a table tennis club nearby, where players of all ages and skill levels get together to practice and compete.

Table Tennis uses a rating system similar to the US Chess Federation to assess the skill of players. Most basement players are rated around 1000, while the pros reach ratings of over 2000. Individual clubs will maintain ratings and other statistics on their players, but official ratings come only from the USATT after playing in sanctioned tournanments.

I've been playing at the RI Table Tennis Association on and off for many years. The ratings database on their website was created with an Access database and includes an online updating tool, player histories, and a round-robin rating calculator created with Javascript.