Aryna Sabalenka will meet Amanda Anisimova for a place in the women's singles final at Wimbledon, which was expected when day nine dawned at the Championships.
What was not anticipated was just how hard it would be for both players to reach the last four.
World No.1 and title favourite Sabalenka looked on the cusp of going out against 37-year-old 104-ranked Laura Siegemund when she was 4-3 and a break down in the third set, having also lost the first.