Naomi Osaka secured a hard-fought victory over Yulia Putintseva, setting up a highly anticipated second-round encounter with Emma Raducanu at the DC Open.

Emma Raducanu returned to America almost four years on from her epic triumph at the US Open still with similar scrutiny which saw her life go from an 18-year-old barely known to a worldwide star.

Four players in the top 14 of the WTA Race To Riyadh Rankings are in action this week and have the opportunity to gain ground on qualification rivals.