World number five Elina Svitolina was made to work hard in her Wimbledon opener on Wednesday as the Ukrainian sealed a 6-3 2-6 6-3 victory over unseeded Belgian Alison Van Uytvanck. The pair traded breaks at the start of their second career meeting before Svitolina gained the upper hand following a tight game to go up 4-2, and the third seed held off a late fightback to claim the first set.