The Professional Squash Association, or simply the PSA, is the governing body for the men's and women's professional squash circuit. The body operates in a similar fashion to the ATP and the WTA for tennis. The PSA's highest professional level, the PSA Squash Tour involves over 250 tournaments annually around the world. Over 1,200 players from five continents and more than 60 countries are registered with the PSA. Rankings are updated weekly based on performances. From Wikipedia
