the former all blacks coach steve hansen said sonny bill williams was the best athlete he'd ever workedire from both codes at the age of 35. in union, he won two world cups with new zealand and a super rugby title with the chiefs. in league, he was an nrl premiership champion with the roosters and the bulldogs. he's now going to concentrate on his boxing career adam wild reports. to be considered one of the greatest of all time is an incredible feat. to be recognised as that in two sports is quite astonishing. to retire from both to focus on your third sports, well, it could only be him. a rugby union legends, a rugby league superstar, his is a career unparalleled, and perhaps there may just be something more to come. today, he announced his retirement from rugby saying it wasn't perfect journey, but the lessons have helped shape him into the man, and the journey wasn't perfect, it was pretty close. he journey wasn't perfect, it was pretty close-— journey wasn't perfect, it was re close. . ., . ., pretty close. he was a game changer for many people- _ pretty close. he was a game changer