Rory Patterson scored a second-half hat-trick as Derry City hammered Aberystwyth Town 5-0 in Wales to secure a 9-0 aggregate victory in their Europa League first qualifying-round tie.
The Candystripes will face Belarusian side FC Shakhtyor Soligorsk in the next round.
Michael Duffy broke the deadlock after just 11 minutes as Derry refused to rest on their laurels after last week's 4-0 win.
Barry McNamee made it 2-0 on aggregate just three minutes later and Patterson's second-half hat-trick piled on the pain for the hosts.
The Brandywell men started with the same side which secured the convincing first-leg advantage, with Patterson and Ryan McBride both shaking off injuries.
City boss Peter Hutton also had one eye on Sunday's league game against Bray Wanderers, with Shane McEleney sitting on the bench as McBride and Cliff Byrne will miss the Bray game through suspension.
City started on the front foot and they went close to taking the lead on nine minutes when Duffy got in behind the home side's defence, but Town goalkeeper Phil Draper raced from his goal to deny the winger.
However, Draper was powerless a minute later as Patrick McEleney's corner from the left was flicked on by Aaron Barry at the near post and the alert Duffy made no mistake with his close-range header.
Peter Hutton's side added a second two minutes later thanks to some quick thinking by goalkeeper Gerard Doherty. His long ball found Duffy, who in turn fed Mark Timlin, and the right winger's delightful cross was gleefully headed home by the unmarked McNamee.
Town started to shut up shop, but by doing that, they never troubled Doherty in the City goal as the remainder of the half ended with the visitors in complete control and cruising into the next round.
Just after the hour mark a super pass by Patrick McEleney over the Town defence found Patterson who made no mistake drilling the ball past Draper.
The visitors continued to shine in front of the City fans, who included former team-mates James McClean and Danny Lafferty, adding a fourth when Timlin broke clear down the right before side-footing the ball across for Patterson to hammer home.
Patterson completed his hat-trick in the 86th minute as he calmly slotted home his ninth goal of the season form the penalty spot after Timlin was upended inside the box by defender Luke Corbisiero.
Aberystwyth Town: Draper, Cle Davies (S James 86), Corbisiero, S Jones, Ateyo, Kellaway, Sherbon (R Davies 86), M Jones, Venables, Williams , Morgan.
Derry City: Doherty, Barry, Byrne, McBride, Jarvis, Duffy, Molloy (S McEleney 68), B McNamee, Timlin, P McEleney (Lowry 62), Patterson.
Referee: Mr Jerome Efong Nzolo (Belgium).