The fourth annual British Polo Day Global Series celebrates the sport of kings with matches taking place across 10 countries. Founded by the entrepreneurs Edward Olver and Tom Hudson, the series kicked off in Abu Dhabi in March; it will soon travel to Los Angeles, Beijing, and Singapore, among other cities, before concluding in December in Jodhpur, India. For each match, the United Kingdom’s traveling team of polo players—many of whom have trained with world-renowned clubs, such as Eton College, Oxford, and Ca…