The action continues in Vienna, Basel, Guangzhou and Tokyo today, with the likes of Alexander Zverev (27), Diana Shnaider (20) and Andrey Rublev (27) all taking to the court.
09:13 CET - There have already been a couple of notable results in Tokyo, with sixth seed Diana Shnaider (20) sweeping aside Viktoriya Tomova (29) 6-2, 6-2 and Leylah Fernandez (22) battling past Varvara Gracheva (24) 6-0, 3-6, 7-5 in a topsy-turvy affair.
Check out the full schedule in Tokyo here.
08:30 CET - Good morning and welcome to our coverage of today's tennis!