In football (or soccer for NA people), I wonder what would you be able to do if the following scenario was to happen:
All 3 player substitutions are used.
The Goalkeeper is made unable to continue the match (knocked out, broke an arm, you decide).
Since you can't change him out, will you have to play the remaining players of the game without a goalkeeper, or can a player pick up the gloves and finish the game as a goalkeeper?