New York: Six-time champion Serena Williams registered a decisive win over Karolina Muchova from Czech Republic to enter the pre-quarterfinals of the ongoing US Open. Williams defeated Muchova 6-3 6-2 after converting five of nine break points against the Wimbledon quarter-finalist.

The No. 8 seed American was broken back midway through the second set, but it was an otherwise flawless display from the veteran in Arthur Ashe Stadium. During her on-court interview after the match, Williams characterised her play as "intense." She will now face Petra Martic, the No. 22 seed from Croatia for a place in the quarterfinals. Martic defeated Anastasija Sevastova from Latvia 6-4, 6-3 to move to the fourth round.