
Katie Boulter vowed to address problems with her serve after her struggles continued with an opening-round loss at the US Open.
The former British number one will drop outside the world’s top 50 after a 6-4 6-4 defeat by 27th seed Marta Kostyuk.

Katie Boulter vowed to address problems with her serve after her struggles continued with an opening-round loss at the US Open.
The former British number one will drop outside the world’s top 50 after a 6-4 6-4 defeat by 27th seed Marta Kostyuk.