Former winners Swansea made a grand EFL Cup entrance as they breezed to a 3-1 success at Peterborough.
A slick Swans side, featuring four men who starred at Wembley when they lifted the trophy in 2013, sailed through a second-round test courtesy of a first-half super show.
Two fringe players came to the fore as boss Francesco Guidolin rang the changes.
Rookie striker Oliver McBurnie enjoyed a dream debut when hitting a deadly double-blow just before the break after having a prominent role in an early opener from Jay Fulton -- also his first senior goal for the club.