Lulu Sun became the first New Zealand woman to reach the Wimbledon quarter-finals on Sunday and hailed the inspiration she found by turning to YouTube to learn from Centre Court legends Steffi Graf and Martina Navratilova.

Qualifier Sun, ranked 123 in the world, made the last-eight by triumphing 6-2, 5-7, 6-2 over 2021 US Open winner Emma Raducanu. The 23-year-old left-hander hit 52 winners against Raducanu, who had been hoping to become the first British women’s champion at Wimbledon in 47 years. “Just watching the professionals growing up,” said Sun when asked how she honed her impressive grass-court tactics.