Tottenham Hotspurs were beaten 1-0 at the Molineux by Wolverhampton Wanderers after Adama Traore scissor-kicked it on the volley to score.
Spurs dominated the first half but had nothing to show for it despite Pedro Porro smashing it against the crossbar and Ivan Perisic's diving header at the near post.
Diego Costa was taken off on a stretcher after he jumped with Spurs' man Oliver Skipp, but his landing caused what seemed to be a serious knee injury.
The Lilywhites come close on so many occasions with another effort from Spanish winger Porro tipped over by goalkeeper Jose Sa after he was found by Dejan Kulusevski.