Naomi Osaka apologized for not congratulating Victoria Mboko for her victory after their Montreal Open women's singles final.

Osaka has made progress since returning in last year's Australian Open. She won two matches in both the Australian Open and Wimbledon this year, has earned $725,727 in prize money and reached the No. 49 spot in the WTA rankings, with a higher ranking likely on the way by making the final.

After playing in the final in Montreal on Thursday night, it was announced Friday that both would no longer play in the Cincinnati tournament. Mboko, an 18-year-old Canadian who w