One is trying to replicate Emma Raducanu's unique feat. The other is trying to emulate the trailblazing Li Na.
Either Ukrainian qualifier Dayana Yastremska or Chinese 12th seed Zheng Qinwen will become a Grand Slam finalist at the Australian Open this weekend.
The pair meet in Thursday's second semi-final, already knowing if defending champion Aryna Sabalenka or US Open winner Coco Gauff - who play at 19:30 local time (08:30 GMT) - awaits.
BBC Sport introduces the two women who have a shot at a surprise triumph.
Dayana Yastremska - the qualifier who could match Raducanu
Age: 23 Nationality: Ukraine World ranking: 93
Seeded players fell regularly early on in the women's draw - and Yastremska was responsible for taking out three of the top 32.