Henman versus Ancic

 

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  Henman Ancic  Match
Total Points Won  87  102  189
Total Errors  16  17  33
Earned Points  70  86  156
Percentage of Errors  18%  17%  18%

Who Won/Lost

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