Sharapova versus Williams Wimbeldon Final

 

Rating System: Matches are rated according to basic quality of play determined by the quantity of unforced errors . Other rating systems are under development. We have chosen the parameter " percentage of unforced errors" as out basic metric because of how unpleasant it is to watch matches that are filled with careless errors. After reviewing a wide selection of matches, we have decided on a nonlinear scale as follows: 0 to 14% is an exceptional level of play. Martina Hingis has played matches at this level. Hence 0-15 is denoted as exceptional. 15 to 19% is Excellent. 20-22% is very good. 23-26% is good; 27-33% is adequate; 34-40% is poor; Above 40% is very poor (there are plenty of examples).
Player  Sharapova  Williams Match
Total Points Won  65  53  118
Total Errors  15  11  26
Earned Points  54  38  92
Percentage of Errors  23%  20%  22%

Who Won/Lost

 Won    
Quality of Play  Good  Very Good  Good
Could the loser win by just reducing their errors?  Won    No
Could the loser win by just reducing their errors if their opponent also reduced their errors?      No