the two teams are la dolfina in white, and ellerstina in black. four players, who ride as many as a dozen horses during matches. all of the players today have reached the highest ranking in the sport, a ten-goal handicap. the player generating the most interest is the man in the blue and white helmet, adolfo cambiaso. he's led his team to victory for the last five years. at 42, he's the tom brady of polo. >> adolfo cambiaso: i love the sport that i do. i love polo. i love horses. and so i try to be the best. >> stahl: you are number one in the world in your sport. that's stunning, isn't it? >> cambiaso: it's strange. when they say it to you, you don't feel like it, but-- >> stahl: how long have you had this title? how many years? >> cambiaso: for 22 years. >> stahl: you've been the best in the world for 22 years? >> cambiaso: that's what they say. ( laughs ) >> stahl: at age 25, adolfo decided to create his own polo team, called la dolfina, and a breeding business from scratch. today, he has nearly 1,000 horses, that are fed a special diet of plan