Shot putters Tom Walsh and Jacko Gill are the first New Zealanders in 40 years to feature along side each other in the final of an Olympic track and field event.
In 1976 Dick Quax earned silver and Rod Dixon finished fourth in the 5000m, missing bronze by 0.12s.
Walsh and Gill have qualified with the second and fourth best throws at the Rio Games.
Walsh threw 21.03m and Gill 20.80m, giving the country the chance for a maiden medal or medals in the men's discipline.
The previous best performance was Les Mills' seventh at Tokyo in 1964.
Their final starts at 11.30am.
Walsh needed one attempt to reach the automatic qualifying standard of 20.65m. He intends to chill out as much as possible to take his mind off the sport's show piece.