| 100% | HAGAN | 5 | Jamie —, Beziers Herault rugby union prop; 2013 Ireland one-Test wonder against USA |
| 46% | PHILORR | 7 | Rugby union prop; 1976 Ireland Test debutant against France |
| 44% | ORR | 3 | Phil —, rugby union prop; 1976 Ireland Test debutant against France |
| 44% | ORR | 3 | Phil —, rugby union prop whose 1976 Ireland Test debut was against France |
| 43% | AFOA | 4 | John —, rugby union prop whose 2005 All Blacks Test debut was against Ireland |
| 43% | DERMODY | 7 | Clarke —, rugby union prop; 2006 New Zealand Test debutant against Ireland |
| 43% | AFOA | 4 | John —, rugby union prop; 2005 New Zealand Test debutant against Ireland |
| 42% | EASTERBY | 8 | Guy —, rugby union scrum-half whose 2000 Ireland Test debut was against USA |
| 36% | TOMKIERNAN | 10 | Rugby union full-back; 1960 Ireland Test debutant against England |
| 36% | HAYMAN | 6 | Carl —, rugby union prop; 2001 New Zealand Test debutant against Samoa |
| 36% | HAYMAN | 6 | Carl -, rugby union prop; 2001 New Zealand Test debutant against Samoa |
| 36% | HUWBENNETT | 10 | Rugby union hooker; 2003 Wales Test debutant against Ireland |
| 36% | RORYBEST | 8 | Rugby union hooker whose 2005 Ireland Test debut was against New Zealand |
| 35% | TOMMYBOWE | 9 | Rugby union wing; 2004 Ireland Test debutant against United States of America |
| 35% | RYAN | 4 | Donnacha —, rugby union flanker/lock; 2008 Ireland Test debutant against Argentina |
| 35% | EARLS | 5 | Keith —, rugby union player; try-scoring 2008 Ireland Test debutant against Canada |
| 35% | OREILLY | 7 | Tony —, rugby union wing whose 1955 Ireland Test debut was against France |
| 35% | WILLIEJOHN | 10 | & 4D Rugby union lock whose 1962 Ireland Test debut was against England |
| 35% | MCLENNAN | 8 | Freddie —, rugby union wing; 1977 Ireland Test debutant against France |
| 35% | OREILLY | 7 | Tony —, rugby union wing; 1955 Ireland Test debutant against France |
| 35% | PETER | 5 | & 23A Rugby union flanker; 2012 Ireland Test debutant against Italy |
| 35% | UBOGU | 5 | Victor —, rugby union prop; 1992 England Test debutant against Canada |
| 35% | YAPP | 4 | John —, rugby union prop; 2005 Wales Test debutant against England |
| 35% | LOBO | 4 | Nahuel —, rugby union prop; 2012 Argentina Test debutant against France |
| 35% | COTTON | 6 | Fran —, rugby union prop; 1971 England Test debutant against Scotland |
| 35% | EIDMAN | 6 | Ian —, rugby union prop; 1983 Wales Test debutant against Scotland |
| 35% | SMART | 5 | Colin —, rugby union prop; 1979 England Test debutant against France |