Arnold Slot pounced on some poor defending to open the scoring for the hosts in the second minute, but Afonso Alves finished when one-on-one with the goalkeeper just moments later.

Jeremie Aliadiere put Boro ahead in the eighth minute after a fine dribble by Tuncay Sanli, and Josh Walker added a third five minutes afterwards in a frantic start to the match.

It was 4-1 after quarter of an hour when in-form Alves chipped home and Stewart Downing, captain for the day, made it five before the break with a sharp finish.

Wales Under-21 defender Rhys Williams rounded off the night's scoring just after the interval with a brilliant long-range effort.