Wales and Switzerland share second behind Italy in Group A, as it ended 1-1 in Baku.
One goal for each side and the second game in Italy’s group ended in a draw.
Both goals arrived in the second half of the match, as Breel-Donald Embolo gave Switzerland the lead and it seemed like Petkovic’s men were going to pick up three points in their opener.
But Kieffer Moore restored the balance and helped Wales secure a point after 74 minutes.
Mario Gavranovic thought he had won it for Switzerland but was ruled out for offside.
Juventus midfielder Aaron Ramsey was involved for Wales, whilst Atalanta had Remo Freuler and Torino had Ricardo Rodriguez in the Swiss starting line-up.