Editing Mark McCormack (section)

==Originated rankings for golf and tennis==
The system used to calculate [[Mark McCormack's world golf rankings]] was adapted in 1986 to become the [[Official World Golf Ranking]] system, with McCormack chairing the rankings committee made up of representatives from all the major golf tours. McCormack pioneered a similar system for tennis rankings. McCormack met his second wife [[Betsy Nagelsen|Betsy Nagelsen-McCormack]], a two-time [[Australian Open]] doubles champion and a [[The Championships, Wimbledon|Wimbledon]] doubles finalist, while she was a business client. They married in 1986.<ref>{{cite news |url=http://usatoday30.usatoday.com/sports/2003-05-16-mccormack-obit_x.htm |title=IMG founder McCormack dies at 72 |newspaper=USA Today |date=May 16, 2003 |access-date=August 19, 2015}}</ref> The couple founded the [[McCormack–Nagelsen Tennis Center]] at the [[College of William & Mary]], which houses the [[Intercollegiate Tennis Association|ITA]] Women's Collegiate Tennis Hall of Fame.