I might be be speaking a heap of sh1te here (winna be the first time) but is there is not some sort of "loophole" kind of thing where we can add a player as a replacement as long as they are under 21 years of age, which could kind of be the reason for us omitting:
Dorrington(20) Bilalovic(20) Kjartansson(19) Frame(19)

As I said I might be spikin complete and utter pesh but I think i read something along those lines