Harriet Dart enjoyed a convincing win over Khloe Pac in the US Open on Monday Harriet Dart has reached her career high ranking with her mom as her standin coach at the US Open and The Londoner laughed we've only had one argument so that's good Dart is up to world number 66 in the live rankings after outclassing French wildc card Khloe Pac 6 to16 to2 in the first round at Flushing Meadow before Emma ratanu plays on Tuesday night she has overtaken the 2021 US Open Champion to become British number two Dart is coached at home by Russian Legend Olga morava the 75-year-old former Wimbledon finalist who is based in the UK but is now reluctant to go abroad so while her team looks for a new traveling coach dart's mother Susie a former County player who first taught her daughter to play has stepped into the role for the final grand slam of the season it's been nice to have my mom here she knows me really well said the Arsenal fan different Dynamic that's for sure we've only had one argument so that's good it's just little things and I think it's easier when it's your mom because 2 minutes later you're all fine we have a really good relationship she hasn't really traveled much with me at all because she works and also has her own life she can hit with me a little bit and she's played so she understands a lot of things and she's been around Olga a lot so it's nice to have her around she hasn't been with me very much since I was a junior