The Top Shark Pro Rating system uses a playing card with 5 stars as a level to identify the rank of the player.
The cards are Ace, King, Queen, Jack, 10,9,8,7,6,5,4,3,2 and the stars are 1,2,3,4,5 . Ace with 5 stars is the highest rate and 2 with 1 star is the lowest rate. The rating is calculated based on the number of tournament entries, where you finish and the buy-in amount.