Elina Svitolina upsets Aryna Sabalenka to punch ticket to WTA Finals last four
Sabalenka remains hopeful of reaching WTA Finals last four despite loss to Andreeva
Pegula and Andreeva set for spicy WTA Finals showdown as Noskova faces Svitolina in semis
Pegula beats Noskova in epic to progress at WTA Finals, Gauff eliminated
