Sabalenka issues apology on social media for outburst during Svitolina defeat
Svitolina reaches third WTA Finals title match after downing Noshkova
Elina Svitolina upsets Aryna Sabalenka to punch ticket to WTA Finals last four
Pegula and Andreeva set for spicy WTA Finals showdown as Noskova faces Svitolina in semis
