The most important tournaments in the series are the Men's and Women's PSA World Championship.

[1] In the middle of the year, the PSA World Series tour is concluded by the Men's and Women's PSA World Series Finals in Dubai, the World Series-ending championships for the top 8 rated players.

Players' performances in the tour are rated by World Rankings for men and women.

‡Although listed on PSA website as a both men's/women's tournament, women's draw was not played due to low number of registered players.

[2][3] The players/nations are sorted by: Following is a list of notable players (winners of a main tour title, and/or part of the PSA Men's World Rankings and Women's World Rankings top 30 for at least one month) who announced their retirement from professional squash, became inactive, or were permanently banned from playing, during the 2017 season: