Name: Svitolina proud of 'tough' win over Bertens
Uploaded: 2018-10-27T12:20:20.154Z
Duration: 1 min 24 s
Description: Elina Svitolina talks to BT Sport following her 7-5 6-7 6-4 victory over Kiki Bertens in the semi-finals of the WTA Finals in Singapore.