History was made on Wednesday as Virginia’s Gretchen Walsh became the first woman to go under 20 seconds in a 50 freestyle.

Walsh swam a 19.95 in the second leg of Virginia’s 200-yard freestyle relay. It’s the first time any woman has gone under 20 seconds in a 50 free.

Walsh would go on to swim a 20.57 in the individual event, resetting the NCAA and US Open record that she had set earlier that morning in prelims. The junior now owns the top-three times in the event, having also tied Maggie MacNeil with the third-fastest time.

She had previously gone a 20.19 split on a relay last month, although that time was unsuited. That time marks the second-fastest relay split ever.

Before Walsh, Anna Hopkin had been the closest to a sub-20 split, going 20.27 on a relay for Arkansas in 2020. The fastest that both Abbey Weitzeil – the first woman to go sub-21 in a 50 free split – ever went was 20.44.