| 100% | ORR | 3 | Phil —, rugby union prop; 1976 Ireland Test debutant against France |
| 92% | PHILORR | 7 | Rugby union prop; 1976 Ireland Test debutant against France |
| 80% | ORR | 3 | Phil —, rugby union prop whose 1976 Ireland Test debut was against France |
| 64% | DERMODY | 7 | Clarke —, rugby union prop; 2006 New Zealand Test debutant against Ireland |
| 64% | AFOA | 4 | John —, rugby union prop; 2005 New Zealand Test debutant against Ireland |
| 64% | MAS | 3 | Nicolas —, rugby union prop; 2003 France Test debutant against New Zealand |
| 64% | MCLENNAN | 8 | Freddie —, rugby union wing; 1977 Ireland Test debutant against France |
| 64% | OREILLY | 7 | Tony —, rugby union wing; 1955 Ireland Test debutant against France |
| 62% | LOBO | 4 | Nahuel —, rugby union prop; 2012 Argentina Test debutant against France |
| 62% | SMART | 5 | Colin —, rugby union prop; 1979 England Test debutant against France |
| 62% | MCKENZIE | 8 | Ewen —, rugby union prop; 1990 Australia Test debutant against France |
| 62% | SOLE | 4 | David —, rugby union prop; 1986 Scotland Test debutant against France |
| 61% | OREILLY | 7 | Tony —, rugby union wing; 1955 Ireland Test debutant against France in the Five Nations |
| 57% | UBOGU | 5 | Victor —, rugby union prop; 1992 England Test debutant against Canada |
| 57% | YAPP | 4 | John —, rugby union prop; 2005 Wales Test debutant against England |
| 57% | COTTON | 6 | Fran —, rugby union prop; 1971 England Test debutant against Scotland |
| 57% | EIDMAN | 6 | Ian —, rugby union prop; 1983 Wales Test debutant against Scotland |
| 57% | IEUANEVANS | 10 | Rugby union wing; 1987 Wales Test debutant against France |
| 56% | MARCONNET | 9 | Sylvain —, rugby union prop; 1998 France debutant against Argentina |
| 55% | TOMMYBOWE | 9 | Rugby union wing; 2004 Ireland Test debutant against United States of America |
| 55% | HAYMAN | 6 | Carl —, rugby union prop; 2001 New Zealand Test debutant against Samoa |
| 55% | HAYMAN | 6 | Carl -, rugby union prop; 2001 New Zealand Test debutant against Samoa |
| 54% | PRICE | 5 | Graham —, rugby union prop whose 1975 Wales Test debut was against France |
| 54% | AFOA | 4 | John —, rugby union prop whose 2005 All Blacks Test debut was against Ireland |
| 53% | PETER | 5 | & 23A Rugby union flanker; 2012 Ireland Test debutant against Italy |
| 53% | IEUAN | 5 | & 9D Rugby union wing; 1987 Wales Test debutant against France |
| 53% | HUWBENNETT | 10 | Rugby union hooker; 2003 Wales Test debutant against Ireland |