Despite embarking on their maiden continental adventure, Crystal Palace are adapting at a rapid pace. Missing key figures like forward Jean-Philippe Mateta and defender Daniel Muñoz, the London club departed Dublin with a commanding result that virtually guarantees them a spot in the Conference League playoffs.
A further three points in their next match against Finland's KuPS should be enough to secure straight entry to the knockout stages, especially following a prior setback against Strasbourg.
This match provided a platform for some of Palace's fringe talent to impress. Christantus Uche, in only his second start since joining on loan from Getafe, notched the scoring with a well-taken finish. Striker Eddie Nketiah contributed a another, scoring for the second game in succession.
A Shelbourne team that had finished their league season proved outmatched even for a largely second-string Palace lineup. The Londoners were already depleted by the reports that Mateta and Muñoz are out with leg problems.
Despite heavy rain in Dublin, Palace rapidly established dominance. A slick passing sequence in the 11th minute, initiated by Daichi Kamada's clever pass, let Nketiah to set up Uche for a straightforward finish.
Midfielder Adam Wharton came close minutes later, driving a long-range shot over the bar. Nketiah subsequently claimed for a penalty after racing into the box, but the referee waved away the appeals.
The formerArsenal man did not have wait long to get his goal, tapping home from a yard out after Uche's shot had hit the post.
Shelbourne were clinging on desperately. Defender Kameron Ledwidge was lucky to escape a booking for two robust tackles on Yeremy Pino, before Chris Richards struck the woodwork with a header from a corner.
The match was effectively over eight minutes from half-time. Yeremy Pino weaved past a series of weak challenges before calmly dispatching a shot past goalkeeper Wessel Speel to make it 3-0.
Following the break, manager Oliver Glasner seized the opportunity to rest key players like Kamada and Wharton. Replacement Romain Esse almost scoring his first touch, but saw his effort blocked.
The youngster was incredibly unlucky later on, seeing one attempt crash off each posts before being gathered on the line. Uche also blazed a glaring chance, showing there is still room for development in his game.
A solitary worry for Palace was a second-half injury to Justin Devenny, who limped off. This paved the way for 17-year-old forward Benji Casey to make his senior debut, capping an otherwise positive night for the visiting side.