Then, early the next year, the eight best-performing players from the Super Series events were invited to compete in the PSA World Series Finals (a similar event to the ATP World Tour Finals).
The World Series Squash Finals were first staged in Vitis Club in Zurich, Switzerland, in 1993 and 1994.
From January 2015, it also included World Series tournaments for women after a merger between PSA and WSA in November 2014.
The top eight players at the end of the calendar year were then eligible to play in the PSA World Series Finals.
At the same time, the players competing in PSA World Series events earned world ranking points according to the prize money, the classification of the event and the final position in the draw the player reached.