Japan's Naomi Osaka says she wants to spread awareness about racial injustice after the former U.S. Open champion walked onto court with a mask bearing the name of Breonna Taylor on Monday.

Osaka, who moved to the United States as a three-year-old, has seven separate masks with her at Flushing Meadows and hopes to wear a different one at each stage on her path to the final.

The mask she wore in her first-round match against Misaki Doi was dedicated to Taylor, a Black woman killed by police officers who burst into her apartment in March.

"For me, I just want to spread awareness," the fourth seed told reporters on a video conference. "I'm aware that tennis is watched all over the world, and maybe there is someone that doesn't know Breonna Taylor's story.

"Maybe they'll like Google it or something. I feel like the more people know the story, then the more interesting or interested they'll become in it."

Breonna Taylor story

Taylor, an aspiring nurse, was killed in her own home when three plain-clothes Louisville police officers conducting a "no-knock" warrant returned gunfire after her boyfriend fired a warning shot after he claimed that he was shooting at what he believed to be intruders over four months ago.

The 22-year-old Osaka has been at the forefront of protests from tennis players against racial injustice in the United States.

She said she appreciated U.S. Open organisers putting up anti-racism artwork and 'Black Lives Matter' banners in the showcourts of Billie Jean King National Tennis Center in the absence of spectators due to the Covid-19 pandemic.

"I just feel like we're heading towards a great direction, and there's a lot of players that are supporting it," she added after her 6-2 5-7 6-2 win over compatriot Doi.

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Breonna Taylor facemasks

A quick online search reveals that similar Breonna Taylor facemasks can be purchased online with the likes of Etsy.com offering a wide selection of Breonna Taylor apparel, including facemasks. TeePublic.com also offer a selection of Breonna Taylor facemasks similar to that work by Osaka in New York.