23!
Ireland: Hugo Keenan, Mack Hansen, Garry Ringrose, Bundee Aki, James Lowe, Sam Prendergast, Jamison Gibson-Park; Andrew Porter, Ronan Keeler, Vinley Bilham, James Ryan, Tadge Bern, Ryan Bird, Josh van Deir Flair, Keelane Doris. Alternatives: Dan Shihan, Sian Haley, Thomas Clarkson, Ian Henderson, Jack Conan, Conor Murray, Jacques Crowley, Ruby Hinisho.