Patent Document ID: 8548610
Application ID: 12799948
Patent Flag: 1

Claim One:
1. A process for determining a tennis player rating level for a tennis player, comprising the steps of: storing first match outcome data ( 14 ) in an electronic archive database ( 12 ), said first match outcome data ( 14 ) comprising a tennis match score of a first tennis match, said first tennis match being between a first player and a first opponent; storing in said electronic archive database ( 14 ) a first player rating number corresponding to said first player; storing in said electronic archive database ( 14 ) a first opponent first rating number corresponding to said first opponent; communicating ( 15 ) said first match outcome data, said first player rating number and said first opponent rating number from said electronic archive database to a processing element ( 18 ); with said processing element, calculating ( 14 ) a first match outcome adjustment value for said first player, wherein said first match outcome adjustment value has a negative value if said first player lost said first tennis match, and said match outcome adjustment value has a positive value if said first player won said first tennis match; with said processing element, calculating a first Match Result Index Number ( 37 ), wherein said first Match Result Index Number corresponds to the mathematical sum of said first match outcome adjustment value and said first opponent rating number; with said processing element, determining a numerical value for a first match reliability factor ( 36 ), wherein the numerical value of said first match reliability factor depends on the format of said first match, and depends on the total number of matches for said first opponent that are stored in said electronic archive database, and depends on a total number of matches between said first player and said first opponent that are stored in said electronic archive database; and, with said processing element, calculating a first player second rating number ( 49 ), wherein said step of calculating said first player second rating number comprises multiplying said Match Result Index Number ( 38 ) by said first match reliability factor ( 36 ), and wherein said first player is assigned by said electronic processing element a first tennis player rating level corresponding to said first player second rating number, wherein the absolute value of the difference between said first player rating level and said first player second rating number is no more than 0.75.