I created this list by using Bud Collins Total Tennis stats in the Open Era register. He documented the win/loss percentage year by year during the open era years. I just did created the career average using basic Jr. high math. The asterik is just a reminder that the pre-open years are not included for players such as Court/ King and the stat is not as useful. Of course for players still active when the book was sent to publish in 2002 like Hingus or Seles, the record is incomplete as well. but for the most part their records went down as age/ burn-out took their toll. I did the same for the men and will post should there be interest
EVERT 0.899
GRAF 0.887
*COURT 0.871
NAVRATILOVA 0.87
SELES 0.836
HINGUS 0.823
AUSTIN 0.802
GOOLAGONG 0.797
DAVENPORT 0.786
SABATINI 0.769
KING 0.768
CAPRIATI 0.755
JAEGER 0.753
MARTINEZ 0.752
MANDLIKOVA 0.74
SANCHEZ 0.723
MALEEVA, MAN 0.717
NOVATNA 0.717
SHRIVER 0.691
PIERCE 0.687
GARRISON 0.684
NIESSEN-MAST 0.682
MJ FERNANDEZ 0.679
SUKOVA 0.667
TURNBULL 0.658
HELDMAN 0.655
WADE 0.649
MORAZOVA 0.647
RUZICI 0.627
ZVEREVA 0.623
TAUZIAT 0.618
KODHE-KILCH 0.617
JORDAN, KATHY 0.614
KOURNAKOVA 0.61
MAJOLI 0.59
BARKER 0.579
JAUSOVEC 0.576
CASALS 0.557
STOVE 0.555
TOMANOVA 0.471
EVERT 0.899
GRAF 0.887
*COURT 0.871
NAVRATILOVA 0.87
SELES 0.836
HINGUS 0.823
AUSTIN 0.802
GOOLAGONG 0.797
DAVENPORT 0.786
SABATINI 0.769
KING 0.768
CAPRIATI 0.755
JAEGER 0.753
MARTINEZ 0.752
MANDLIKOVA 0.74
SANCHEZ 0.723
MALEEVA, MAN 0.717
NOVATNA 0.717
SHRIVER 0.691
PIERCE 0.687
GARRISON 0.684
NIESSEN-MAST 0.682
MJ FERNANDEZ 0.679
SUKOVA 0.667
TURNBULL 0.658
HELDMAN 0.655
WADE 0.649
MORAZOVA 0.647
RUZICI 0.627
ZVEREVA 0.623
TAUZIAT 0.618
KODHE-KILCH 0.617
JORDAN, KATHY 0.614
KOURNAKOVA 0.61
MAJOLI 0.59
BARKER 0.579
JAUSOVEC 0.576
CASALS 0.557
STOVE 0.555
TOMANOVA 0.471