Middlesbrough defeated Championship opponent Leeds United at Elland Road, with three goals in 16 minutes to advance to the Carabao Cup round two.
Anfernee Dijksteel gave Boro the lead in the first half by letting the ball drift from the right touchline into the box and then sending it into the corner.
Josh Coburn released Delano Burgzorg as Leeds pressed forward, and the striker maintained composure to flick the ball off Joe Rodon and into the net.
After Leeds manager Daniel Farke made five substitutions in the 65th minute, Coburn scored the game’s first goal at Elland Road for Boro since 2011.
The sides served up 12 goals in their two meetings last season, and a frantic start suggested more of the same.
Boro goalkeeper Sol Brynn stuck out a leg to deny Junior Firpo in the third minute, and moments later Dijksteel flicked a close-range header just wide at the other end, but it proved a false dawn in a cagey first half.
All that changed in a frenetic second half, with Middlesbrough rewarded for a fast start as Anfernee scored a superb opener and then teed up Burgzorg with a golden chance for 2-0, but Leeds keeper Karl Darlow made the block.
Burgzorg redeemed himself with his first goal for the club, and Coburn capped an impressive evening as Leeds were taken apart.
Of Farke’s mass substitution, Joel Piroe had a shot blocked by Matt Clarke at point-blank range and Georginio Rutter’s left-footed strike smacked a post, but only Darlow spared the hosts further punishment, pushing away Coburn’s low shot.