Australian Open champion Aryna Sabalenka of Belarus reached the fourth round at Indian Wells by walkover on Sunday as Ukrainian qualifier Lesia Tsurenko pulled out of their scheduled match. Organizers said Tsurenko cited "personal reasons" for yet another withdrawal. No further details were given, and there was no indication that the Russian invasion of Ukraine last year -- which has resulted in Russian and Belarussian tennis players from being barred from competing under their national flags -- was a factor.