'I'm outside. I'm going to hurt you': Katie Boulter on the hidden horror of success as a female athlete

Katie Boulter has had 18 months to get used to being the British No 1. It has mostly been a time of great milestones and opportunities; from winning her first slew of titles, making her top-30 debut and gracing the cover of fashion magazines to feeling the love from her supporters in far-flung tournaments around the world. The trade-off with becoming a well-known athlete has occasionally been startling though, including run-ins with a handful of depraved so-called fans. "People have followed me at times," Boulter says. "I actually went to go and pick up Alex [de Minaur, her boyfriend and…