04:30 CET - Ben Shelton claims the ATP Toronto title! The American comes from a set down to defeat Karen Khachanov 6-7 (5), 6-3, 7-6 (3). In a match that lasted nearly three hours, the four seed kept his cool in the deciding set to win his first-ever Masters 1000 title.
04:25 CET - Clervie Ngounoue earns a big win as she takes down Hailey Baptiste 6-1, 4-6, 6-1 to move on in Cincinnati.
04:20 CET - World number 56 Fabian Marozsan is through to the second round in Cincinnati after he gets past Colton Smith 6-1, 4-6, 6-4. In the end, the Hungarian converted on the fourth match point to come out on top.
03:40 CET - Ben Shelton forces a third and deciding set versus Karen Khachanov as the American takes the second 6-4.
02:50 CET - A hard-fought first set in the ATP Toronto final goes Karen Khachanov's way, as he wins in a tiebreak (7-5) over Ben Shelton. Follow the match here.
02:15 CET - And Canada has a new champion!! Eighteen-year-old wildcard Victoria Mboko battles her way back from a set down to get the better of Naomi Osaka 2-6, 6-4, 6-1. It was the fourth time that she defeated a former grand slam champion en route to glory in Montreal.
01:50 CET - Olga Danilovic comes out on top in her first round match in Cincinnati. She gets the better of Katie Boulter 6-0, 7-5 to advance.
01:30 CET - The match is going the distance in Montreal, as Victoria Mboko wins the second set 6-4 over Naomi Osaka. There were several breaks of serve in the set, but in the end, the Canadian does just enough to force a decider. Follow the match here.
01:15 CET - Adrian Mannarino is into the second round in Cincinnati after getting past Jordan Thompson 6-2, 6-2 in 86 minutes.
00:45 CET - Naomi Osaka is one set away from capturing the National Bank Open. She breaks hometown hopeful Victoria Mboko twice to win the first set 6-2. Follow the match here.
23:55 CET - Our attention is now turning towards the two finals in Canada, but you can keep an eye on how things pan out in the remaining men's matches in Cincinnati here and in the women's matches here.
Now, let's see what the finals in Montreal and Toronto have in store for us!
23:46 CET - Play in Cincinnati has been interrupted due to rain, but there's no such rain north of the border, where Naomi Osaka is about to contest her biggest match in a long time in Montreal.
The Japanese star is looking to win her first title on the WTA Tour since 2021 tonight, but will have to beat 18-year-old sensation and home hero Victoria Mboko to do so.
Whichever way this final goes, it will be a huge story.
It begins in just over 10 minutes, and you can follow every point of it here.
23:33 CET - Wildcard Bernarda Pera has been beaten on home turf by Eva Lys, losing 6-2, 4-6, 7-5 to the young German.
22:53 CET - Elsewhere in Cincinnati, world number 110 Aoi Ito has beaten Elena Gabriela Ruse 6-2, 7-6.
22:46 CET - She more than held her own, but Venus Williams has fallen at the first hurdle in Cincinnati, losing 6-4, 6-4 to Jessica Bouzas Maneiro in an hour and a half.
Nevertheless, it remains remarkable that she's playing such a high level at her age having been out for such a long time, and we'll get to see her do it at the US Open in the mixed doubles at the very least.
22:15 CET - Qualifier Terence Atmane and Daniel Elahi Galan have cruised to a 6-2, 6-2 victory over Yoshihito Nishioka and a 6-2, 6-4 win over Vit Kopriva respectively.
21:19 CET - Zizou Bergs and Roman Safiullin have advanced with comfortable wins over Jacob Fearnley and Alejandro Tabilo respectively, with both prevailing in straight sets.
On Centre Court meanwhile, 45-year-old Venus Williams has just gotten underway in her first match at the tournament as she ramps up her shock comeback ahead of the US Open.
21:08 VET - 2023 Wimbledon champion Marketa Vondrousova has advanced in Cincinnati with a 6-3, 6-1 win over Jaqueline Cristian, while Laura Siegemund has lost 6-4, 6-4 to Anastasia Potapova.
Next up for Vondrousova is world number one Aryna Sabalenka, whom she's won her last two matches against.
20:20 CET - In something of a surprise result, Matteo Arnaldi has lost 6-7, 6-3, 6-4 to Benjamin Bonzi in a gruelling battle that finished just a minute short of three hours.
Young French talent Giovanni Mpethsi Perricard is also out, having lost 6-3, 6-2 to Chinese qualifier Chak Lam Coleman Wong.
19:54 CET - Spain's Pedro Martinez and Roberto Carballes Baena are the latest men through after three-set victories over Nicolas Jarry and Hugo Gaston, respectively.
19:33 CET - Rising star Joao Fonseca has battled into the next round in Cincinnati, recovering from a set down to defeat Yunchaokete Bu 4-6, 6-2, 7-5.
Elsewhere, Donna Vekic's disappointing year shows no signs of slowing down, with the Croat losing 6-1, 4-6, 6-3 to Sorana Cirstea.
18:35 CET - Australian teenager Maya Joint is the first woman through in Cincinnati after a dominant 6-2, 6-3 win over Greet Minnen.
Meanwhile, on the men's side of the tournament, Arthur Rinderknech has progressed to the second round courtesy of a 6-3, 6-3 triumph against Nuno Borges.
17:13 CET - Play is now underway in Cincinnati, with Joao Fonseca, Donna Vekic and Matteo Arnaldi all on court for their opening matches.
Keep track of all the men's action here and the women's action here.
14:00 CET - Good afternoon and welcome to our coverage of tonight's finals at the Canadian Open, as well as the start of the combined men's and women's Masters 1000 tournament in Cincinnati.
It promises to be a thrilling evening in Canada, with home favourite and teenage sensation Victoria Mboko facing Naomi Osaka for the women's title in Montreal at 00:00 CET.
Meanwhile, in Toronto, fourth seed Ben Shelton comes up against Karen Khachanov, as both men target their first piece of silverware in 2025. That match is due to get underway a little later at 01:30 CET.
Today also marks the start of the Cincinnati Open, with Joao Fonseca, Marketa Vondrousova and Venus Williams among the standout names in action throughout the evening.
Check out the full men's schedule in Cincinnati here and the full women's draw here.