Despite embarking on their first-ever continental campaign, Oliver Glasner's side are adapting very quickly. Missing star players like striker Jean-Philippe Mateta and wing-back Daniel Muñoz, the Eagles left Dublin with a commanding win that virtually guarantees them a spot in the Conference League playoffs.
A further victory in their next match against Finland's KuPS ought to be enough to secure straight entry to the last 16, particularly after a previous setback against Strasbourg.
This occasion offered a platform for some of Palace's fringe talent to shine. Christantus Uche, in only his second start since arriving on loan from Getafe, opened the account with a well-taken goal. Forward Eddie Nketiah contributed a second, scoring for the second consecutive match.
The Shelbourne side that had finished their domestic season were outmatched even for a largely second-string Palace lineup. The visitors were further weakened by the news that Mateta and Muñoz are sidelined with leg injuries.
Despite heavy rain in Dublin, Palace rapidly established dominance. A slick passing sequence in the 11th minute, sparked by Daichi Kamada's incisive pass, allowed Nketiah to lay on Uche for a simple tap-in.
Midfielder Adam Wharton came close soon after, fizzing a powerful effort over the bar. Nketiah subsequently claimed for a penalty after bursting into the box, but the official waved away the appeals.
Ex-Arsenal man did not have wait long to find his goal, prodding home from a yard out after Uche's shot had struck the post.
The home side were clinging on desperately. Defender Kameron Ledwidge was lucky to avoid a booking for two robust challenges on Yeremy Pino, before Chris Richards rattled the crossbar with a powerful header from a corner.
The match was as good as over eight minutes before half-time. Yeremy Pino weaved past a series of weak challenges before calmly dispatching a shot past keeper Wessel Speel to make it 3-0.
After the break, manager Oliver Glasner seized the opportunity to rest key individuals like Kamada and Wharton. Replacement Romain Esse almost scoring with his first touch, only to see his shot blocked.
The youngster was desperately unlucky later on, seeing one attempt strike off each posts before being clasped on the line. Uche also blazed a sitter of a chance, indicating there is still room for improvement in his game.
The only concern for Palace was a late injury to Justin Devenny, who was forced off. This paved the way for 17-year-old striker Benji Casey to earn his first-team debut, rounding off an otherwise positive night for the visiting side.
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