Dalibor Svrcina 14/02/2017: 1st serve 177 km/h [zCh1YXBCoHs] Published in Everyday Knowledge Slow motion 1st serve of European champ U14 5Yj4s9KKkht SSfs39bTyyq kWCudMVpvGB afPjVbCQrh9 6X33JvbYLBN EcmP1GFFTXT