Sophie Pascoe knew an Australian was gaining on her, when the murmur of the Gold Coast swimming crowd became a full-bore roar.
Fortunately for New Zealand's para-swimming golden girl, it made little difference, as she switched on the afterburners to collect Commonwealth Games women's SB8 100m breaststroke gold.
The 25-year-old took out the final with a time of 1m 18.09s, a little under a second ahead of fast-finishing local hero Paige Leonhardt.
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Pascoe also collected gold in Saturday's S10 200m individual medley.
The Cantabrian and 2018 opening ceremony flag-bearer said she knew Leonhardt was coming, but wasn't about to relinquish gold.
"That's what obviously made me dig in a bit more and go, I really want this and I just held on," Pascoe told reporters.
"I'm stoked to come away with the gold."
In the event's morning heat, Pascoe wiped the floor with her opponents to finish with a time of 1m 17.92s, a personal best.
Having equalled her 2014 Glasgow Games return of two gold medals, Pascoe can sign off on her Gold Coast adventure satisfied.
But she'd keep looking to improve ahead of the 2020 Tokyo Paralympics.
"There's a lot of skills I need to work on, obviously form, but there's definitely more I haven't been able to do in training," Pascoe said.
"We've got young blood coming through [in para swimming]. It's really about defending all these skill-sets, working really hard in training sessions to get the most out of myself and performing in Tokyo."
Elsewhere, Kiwi Daniel Hunter finished fourth in his 50m freestyle semi-final to earn a reserve spot for the final, while Bobbi Gichard fell out of the women's 50m backstroke final reckoning via a swim-off.