Tokyo Olympics: 'Not here to get second' - Tom Walsh primed for shot at gold in star-studded shot put field

Former shot put world champion Tom Walsh is on the hunt for Olympic gold, but he knows it'll take a personal best to even make the podium in Tokyo.

But the 2016 bronze medallist says he's in the best condition of his career - and is refusing to bet on any "favourites" other than himself. 

Just hours after Dame Valerie Adams shot for bronze, and our gold medalists boarded a bus for the airport home, Timaru native Walsh touched down in Tokyo.

"It's been a long time coming," Walsh says of his Tokyo bow.

"This is what I do this for. I do the sport to wear the silver fern and to win when it really matters. 

"I'm not coming here to get second."

Walsh means business, and he's got form, with six consecutive competition wins in the lead up to the Olympics.

The 29-year-old reckons he's in better nick now than he was when he won bronze in Rio - but then again, so is the competition.

"Well one thing I'll tell you for sure, you're not gonna get bronze with 21.26 or whatever I threw. 

"You might not even get in the top eight."

Defending Olympic champ American Ryan Crouser broke the world record this year - with a mammoth 23.37 metre throw.

"I'd hate to see that he peaked a bit early. That would be terrible to see." 

Walsh is predicting a 23-metre podium standard. He's only managed 22-metres-plus twice this year.

"I think that's the type of shape you need to be in. It does give you a real opportunity to bring home the silverware, or the gold I should say.

"It's all on."

The five-year wind up is over, it's time for Tom to throw.