This comes after the Swiss-American combination received a bye in the first round before their quarter-finals opponents Sara Errani and Carla Suarez Navarro conceded a walkover, sending the fourth seeds straight into the last-four stage.
This implies that the duo have earned 350 ranking points and $36,670 by entering the semi-finals, where they will be taking the court for the first time against fifth seeds Julia Georges and Karolina Pliskova on Saturday.
Hingis and Vandeweghe are unbeaten together, having won all their eight matches since teaming up earlier this year.
Meanwhile, Hingis’ former partner and fellow world number one Sania Mirza (along with partner Barbora Strycova) had to play two matches in a day en route the semi-finals. Should all go well, Hingis and Mirza could clash in the Sunday’s title-clash.