Unconscious GPS #2 & 3

[Hawks Coach]

UGPS #2
JV game, varsity is about to come in, JV power forward crashes off court and flattens starting varsity point guard into wall rendering him unconscious for 10 minutes, delaying game and making you mad because you have the varsity game which follows. Does point guard play without MD's note?

UGPS #3
You are at an AAU tournament, 1 minute left in losers bracket final, A1 knocked unconscious. A goes on to win and is playing winners bracket champ B in the championship game which immediately follows the losers bracket championship (lets ignore the awful tournament managment problem here - it has happened before!). Does A1 get to play without MD's note (we are playing NF rules, if you care!). What if game is 90 minutes later, or 5 hours? what would you allow given this knowledge?