Besides obtaining one Grand Slam, the US Open, the country also has three Masters 1000 tournaments, making it the country with the greatest quantity of crucial events. https://api.searchiq.co/api/click?url=aHR0cDovL255c2FhZXNwb3J0cy5jb20vJWViJWE5JTk0JWVjJTlkJWI0JWVjJWEwJTgwJWViJTg2JTgwJWVjJTlkJWI0JWVkJTg0JWIwLSVlYyU5NSU4OCVlYyVhMCU4NCVlZCU5NSU5OCVlYSViMyVhMC0lZWMlOGIlYTAlZWIlYTIlYjAlZWQlOTUlYTAtJWVjJTg4JTk4LSVlYyU5ZSU4OCVlYiU4YSU5NC0lZWMlODQlYTAlZWQlODMlOWQv