First the Wolves stopper had to stop a 20-yarder from Rafal Murawski, before MariuszLewandowski fired wide from the edge of the box after a neat pull-back.
MariuszLewandowski drew a smart save from Myhill, low to his left, with a long-range shot but the Hull keeper was then beaten with 10 minutes left as Guerreiro raced onto a long ball over the top.