Wightman won a lifetime total of 45 U.S. titles , the last at age 68 .
Wightman dominated American women 's tennis before World War I and had an unparalleled reputation for sportsmanship .
Wightman won a lifetime total of 45 American titles , the last at age 68 .
Wightman dominated American women 's tennis before World War I and had an unparalleled reputation for sportsmanship .