Held in Chicago this year Prague last.A tennis homage to Rod Laver,probably the greatest ever male player I would say. Three days of competition,singles and doubles.Wins are worth one point on Friday,two on Saturday and three Sunday. Two full sets and a Championship Tiebreak if one set all. A tennis Ryder Cup I suppose and with the almighty mess that is the Davis Cup,it may prosper. Federer owns half of it I believe. I enjoyed it but suspect only tennis players will.