After 23 years and 11 ASP world titles, Kelly Slater and clothing brand Quiksilver have parted ways, ending one of the most successful sponsorship arrangements in sports history. Slater, now 42, signed with Quiksilver back in 1990, when he was just 18 years old. He won his first professional contest the week after he signed, and his first ASP world title by the time he was 20, becoming the youngest world champion ever.

Read more on Kelly’s departure here.