Although Jones finished just 0.06secs in front of Ukrainian Viktoriia Us, it was a crucial margin, as it meant she avoided the afternoon repechage round. That's something of a novelty for Jones this season, after struggling for consistency through the world cup rounds.
"I've been saving it all for this one," she quipped. "It makes a big difference - I would've been waiting around for three hours before the next run and it's mentally draining more than anything. Now I've got two days to readjust and correct a few things before the semifinal."
She can also relax and watch the other members of the New Zealand team, with C1 paddlers Ben Gibb, James Thwaites and Shaun Higgins in action tomorrow and K1 men Mike Dawson, Callum Gilbert and Finn Butcher lining up on Friday.
The K1 paddlers need to finish in the top-15 nations to qualify a position at Rio de Janeiro, while the C1 canoeists need to place in the top-10.
Meanwhile, New Zealand-raised Cook Islands paddler Ella Nicholas was 51st in the first round with a 115.25sec time. She was in good company, however, with defending world champion Australian Jess Fox also having to go through the repechage round after finishing the first heat in 38th spot.