Williams will contest the rugby sevens and was the main attraction at a packed Olympics press conference where he was probed about his aspirations to help New Zealand stand atop of the podium in Rio.   

"I guess it would have to surpass it (World Cup wins)," Williams said.

"Because as an athlete, there's no higher level than the Olympics. I'm just fortunate enough Titch gave me a shot at the start of the year.

“I've been fortunate enough this year to learn of the boys in the team. I've just trained my butt off and now that I'm here I just want to be successful."

Williams was understanding of fellow code-hopper Jarryd Hayne’s failed attempt to make the Fiji Sevens team.

The 31-year-old began his Olympic pursuit in January after approaching New Zealand sevens coach Gordon Tietjens about a switch from the 15-a-side game.

In comparison, Hayne had just weeks to solidify his place in the Fiji Olympic team.

"Hayne just needed time," Williams said.

"As you see, there's been a lot of 15s players trying to make the sevens team this year and a lot of them haven't made it because it's a totally different game.

"That's why I'm thankful I sat down with Tietjens at the start of the year and we sussed out a plan to put myself forward for the whole year to try and crack it."