Osaka is off to the quarterfinals after winning round four of the US Open against Estonia's Anett Kontaveit 6-3, 6-4. This time, Osaka wore a mask on and off the court bearing the name of Trayvon Martin, a 17-year-old who was visiting his father in 2012 in Sanford, FL, when, after going to a 7-Eleven, was followed, shot, and killed by neighborhood watch volunteer George Zimmerman.
Zimmerman called 911 to report Martin as a "suspicious person," and he argued self-defense. He was tried for second-degree murder and acquitted. This launched the Black Lives Matter movement.
Osaka tweeted after the match, "I remember Trayvon's death clearly. I remember being a kid and just feeling scared. I know his death wasn't the first but for me it was the one that opened my eyes to what was going on. To see the same things happening over and over still is sad. Things have to change."
