While the duo were originally slated to meet on Monday night, organisers blamed scheduling issues for a switch-around and they will now face off on Tuesday instead - annoying plenty of fans who had bought tickets for the original day to watch them play.
Williams is effectively embarking on a “farewell tour” of sorts after announcing her retirement from tennis last week, causing a spike in ticket sales for the US Open, which starts later this month. Raducanu spoke of her happiness at being drawn to face the departing icon ahead of the encounter: “It’s an amazing opportunity to play probably the best tennis player of all time. It’s probably going to be my last opportunity to ever play her.”
Last year the women’s singles at the Cincinnati Masters was won by the now-retired Ash Barty in straight sets, defeating Jil Teichmann.
Here’s everything you need to know ahead of the match.
When is Raducanu vs Williams?
Raducanu will meet Serena on Tuesday 16 August after the last-minute rescheduling. They are the first match on centre court in the evening session, which starts at 7pm local time, so 12am on Tuesday evening/Wednesday morning in the UK - meaning a late night for Brits eager to watch the contest.
Where can I watch it?
The Cincinnati Masters is being shown live on Amazon Prime Video, which can be watched on TV through Chromecast, Apple TV, BT TV, Fire TV, native Amazon apps in digital television sets and other plug-ins. It can also be streamed via desktop or mobile devices via the Amazon Prime Video app or desktop website.
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Who else will be playing on Tuesday?
American Coco Gauff, Japanese superstar Naomi Osaka, two-time Grand Slam winner Simona Halep and Serena’s older sister Venus Williams are all in action on Tuesday.
In the men’s singles, the likes of world No 1 Daniil Medvedev, Wimbledon finalist Nick Kyrgios, British No 2 Dan Evans and Carlos Alcaraz are all scheduled to feature.
Odds to win Cincinnati Masters women’s singles
Iga Swiatek 3/1
Simona Halep 6/1
Coco Gauff 11/1
Amanda Anisimova 13/1
Elena Rybakina 14/1
Naomi Osaka 14/1
Aryna Sabalenka 14/1
Ons Jabeur 14/1
Emma Raducanu 33/1
Serena Williams 40/1