WTA Finals: Aryna Sabalenka apologises for on-court outburst after defeat to Elina Svitolina

Aryna Sabalenka was knocked out of the WTA Finals by Elina Svitolina after she suffered a 6-3 3-6 6-1 defeat to the Ukrainian on Friday; Svitolina will take on Mirra Andreeva in Sundays final, watch the match live on Sky Sports Tennis from 8pm