In 1946, the Gracida family represented Mexico in the most prestigious tournament in American polo, the U.S. Open Polo Championship, at New York’s Meadowbrook Polo Club.
In 1941, John H. H. Phipps, Michael Grace Phipps (1910–1973), Charles Skiddy von Stade and Alan L. Corey, Jr., all players in residence at the Gulfstream Polo Club, won the U.S. Open Polo Championship at the Meadow Brook Polo Club.
In 1965, he established the Willis L. Hartman Trophy to recognize the winner of the Best Playing Pony of the U.S. Open Polo Championship.
Australian Open | French Open | World Rally Championship | World Championship | NCAA Men's Division I Basketball Championship | Marco Polo | Ultimate Fighting Championship | Open University | open source | World Championship Wrestling | U.S. Open | Polo Grounds | World Touring Car Championship | Six Nations Championship | County Championship | British Touring Car Championship | World Chess Championship | Wacken Open Air | national championship | All-Ireland Senior Hurling Championship | Football League Championship | Extreme Championship Wrestling | Bowl Championship Series | Championship | All-Ireland Senior Football Championship | 2005 World Touring Car Championship season | The Open Championship | World Sportscar Championship | 2010 FIBA World Championship | U.S. Open (tennis) |
As a professional player, he won the Pacific Coast Open, the U.S. Open Polo Championship in 1993 (with Ruben Gracida, Mike Azzaro, Guillermo Gracida, Jr., and Joe Wayne Barry) and the Governors Cup.
A five-goal player, he won U.S. Open Polo Championship in 1983, the Cowdray Park Gold Cup with the Boca Raton team in 1970, the C.V. Whitney Cup, the Rolex Gold Cup, the America Cup, the Monty Waterbury Cup, the Pacific Coast Open, the 12 and 16 Goal Championships, three Chairman's Cups, the Butler Handicap, the North American Cup and numerous Sunshine League titles.