Sampdoria defender Milan Skriniar has been included in Slovakia's 23-man squad for Euro 2016, despite only making his international debut last week.
The 21-year-old featured in back-to-back 3-1 successes as Jan Kozak's side beat Georgia and world champions Germany in pre-tournament warm-ups, and played well enough to earn a spot in the final group.
Skriniar now joins more established names Martin Skrtel, Marek Hamsik and Juraj Kucka in a selection that includes just two forwards.
Lukas Tesak, Erik Sabo, Adam Zrel'ak and Matus Bero were the four men cut from an original 27-man provisional squad, with Kozak revealing that returns for Norbert Gyomber and Tomas Hubocan helped his decision.
"My biggest problem was finding another right-back, a position where we haven't got an alternative," Kozak said.
"However, Gyomber is fit again and Hubocan's heel looks better, so I said no to Tesak."
Slovakia's final pre-tournament friendly with Northern Ireland takes place on Saturday, with Kozak's men then kicking off their Euro 2016 campaign against Wales on June 11 in Bordeaux. Slovakia will also face England and Russia in Group B.
Slovakia squad in full:
Goalkeepers: Matus Kozacik (Viktoria Plzen), Jan Mucha (Slovan Bratislava), Jan Novota (Rapid Wien)
Defenders: Peter Pekarik (Hertha Berlin), Milan Skriniar (Sampdoria), Martin Skrtel (Liverpool), Norbert Gyomber (Roma), Jan Durica (Lokomotiv Moscow), Kornel Salata (Slovan Bratislava), Tomas Hubocan (Dinamo Moskva), Dusan Svento (Cologne)
Midfielders: Marek Hamsik (Napoli), Juraj Kucka (AC Milan), Miroslav Stoch (Bursaspor), Vladimir Weiss (Al-Gharafa), Robert Mak (PAOK), Patrik Hrosovsky (Viktoria Plzen), Jan Gregus (Jablonec), Viktor Pecovsky (Zilina), Stanislav Sestak (Ferencvaros), Ondrej Duda (Legia Warszawa)
Forwards: Michal Duris (Viktoria Plzen), Adam Nemec (Willem II)