Nuno Espirito Santo won the battle of the new managers as his Wolverhampton Wanderers side opened their season with a nervy 1-0 win over Garry Monk's Middlesbrough.
Both clubs have spent heavily over the summer and are two of the favourites for promotion to the Premier League, but it was the hosts who prevailed at the Molineux as Boro's first game back in the second tier ended in defeat.
Leo Bonatini, on loan from Saudi Arabian club Al-Hilal, scored the game's only goal in the 33rd minute after a terrible error from the Boro defence.