Venus Williams beat Wimbledon champion Garbine Muguruza to advance to the semi-finals of the WTA Finals in Singapore.
The 37 year old, beat the Spaniard 7-5 6-4 to avenge her Wimbledon final loss and secure second place in the White Group behind Karolina Pliskova.
A win would have seen any if the two players qualify for the last four as they both held identical 1-1 records in White Group at the season-ending event but Williams did enough to progress to the next round.
Pliakova, who won her first two matches ended the round-robin with a 6-3 6-1 defeat by Jelena Ostapenko earlier on Thursday. Williams will play Caroline Wozniacki or Caroline Garcia in the semis.
Denmark’s Wozniacki has guaranteed a semi-final place with two wins, and will win the White Group with victory over French eighth seed Garcia on Friday. World number one Simona Halep then takes on Ukraine’s fourth seed Elina Svitolina, with both women still able to reach the semi-finals heading into the final group matches on Friday.