Unlike other tournaments which are joined by teams whose players are selected through recruitment process, this is a paksa-rela type of team grouping.
Nobody wants to be a benchwarmer in this kind of arrangement by picking a subsitute in a team. Moreover, this unker's tourney to have fun right?
To resolve this issue in the future, why not allow all the late registers to be allowed second chance to be in the tournament and take over this MIA players as they probably are more serious in joining the competition. The MIA will be kicked out and will not be participating the tourney from there onwards and replaced by the new player.
Admins should already have a list of late registers right? so first come first serve during the start of the match in the event MIA happens.
Win-win for everybody.

Calling for team 8. All ready for tonite ?

K-r-e-X Proptus advanxer kabies1983
11 Sept, Thursday, 10 pm play the match with team 7 u guys ok?