- Copenhagen and Danish junior championships in soccer, table tennis, speed skating, tennis. (Through school years, also club handball and bandy.)
- Begins play on international tennis circuit, off and on over five decades (including some 20 years at Wimbledon, 102 Davis Cup matches).
- Singles titles: Paris Indoors (1951, 1952), Antwerp (1951, 1956), Stuttgart (1953), French Indoors (1954), Connaught (1954), Marseille (1957), Capetown, Asian Championship (in Lahore, Pakistan, 1958), Pakistani Championship (1958), Beaulieu (1959), Madrid, Monte Carlo, Cannes (1959), St. Moritz (1965), Vaud (1965), (1968) ...
- Founding member, Association of Tennis Professionals (1972).
- While still on Open tour, invited to join Tennis Grand Masters tour (over age 45).
- With Sven Davidson won Wimbledon Centennial senior doubles.
- 1976 number one world ranking on Senior Circuit.
- U.S. Senior National singles titles (in age 60s and 65s).
- Touring pro for Woodstock (New York, USA) and Mill Creek (Washington, USA) tennis clubs.
- Clinics-cum-exhibitions, films and commentary, speaking engagements, world wide, including:
- USTA Teachers Conference in New York, on "Pros(e) & Poetry".
- ;Co-teaching (with Molly Martin), "Sports & Gender," University of Washington Experimental College, Seattle (1984).
- "Psychology, Women & Sports" conference, Denmark (1985).
- "Ballplaying: Western View, Buddhist Approach," Omega Institute for Holistic Studies, Rhinebeck, New York (1989).
- Seminars at Gerlev Idrætshøjskole and other schools/institutions in Denmark (1980s-'90s).
- Speaking engagements, films and commentary, performances, world wide, including:
- Play The Game, international conference for sports journalists, Copenhagen (2000, 2002).
- Lokale- og Anlægsfonden (Denmark, 2002): speaking on athletic-architectural ideas (Buckminster Fuller, etc.), in connection with Olympic project in Texas from early 1970s.
- "Elemental Play", a two-day workshop in November 2005 at Meadowood, Napa Valley, California, based on the film Before The Wall: Body & Being".