Bright, bold, block colours have been a significant fashion trend this North American hard-court season.
They pop against the courts, either under the summer sun or beneath the floodlights during night matches.
We celebrate 10 eye-catching outfits that have proven especially striking in the build-up to the US Open.
Red is proving a lucky colour for Aryna Sabalenka in 2024.
She defended her Australian Open title earlier this year in a red dress and wore the colour again this week en route to the WTA 1000 title in Cincinnati.
Stefanos Tsitsipas has been keeping things fresh during the summer swing in a peach-coloured outfit that contrasts nicely with the blue hard courts.
After wearing green-and-gold for Australia at the Paris 2024 Olympics, Ajla Tomljanovic has switched to hot pink during the North American season, contesting events in Cincinnati and Monterrey.
Daniil Medvedev often opts for blue.
And his summer outfit, a kit completed with sky-blue shorts, is a look well-suited to this period in the calendar.
Zheng Qinwen and Frances Tiafoe are sporting shades of eye-catching yellow.
It seems the perfectly bright colour choice for two players performing brightly; Zheng is fresh off winning the Olympic singles gold medal in Paris while Tiafoe this week reached the Cincinnati final.
We've been seeing plenty of Jessica Pegula's purple dress this summer.
The American star wore it all the way to the Toronto title, then came within one match of pulling off the rare Canada-Cincinnati double, before falling to Sabalenka in the Cincy final.
It was a run that saw her build a nine-match winning streak.
Ons Jabeur has always had a unique style, and it's no different during the North American season, with the Tunisian wearing a distinct shade of green in the build-up to the US Open.
Holger Rune is an animated personality on court, and he opted for an outfit to match, donning a bright red kit while winning through to the Cincinnati semifinals.
At the opposite end of the blue spectrum to Medvedev, Elise Mertens wore a deep shade of the colour as she upstaged Naomi Osaka en route to the third round in Toronto.
Ben Shelton and Iga Swiatek are sporting outfits that hint at a spectacular sunrise or sunset, as they hone their games ahead of the US Open.
And both are performing strongly; Swiatek was a semifinalist in Cincinnati while Shelton made the quarterfinals of the same event, after an earlier semifinal run in Washington DC.