Originally Posted by JLyon
It is a game because it is lateness on a rest period not a changeover. A changeover would be a time violation, but a rest period lateness is a game penalty up to five minutes late, then default.
THat is only if you play a full third set. If it's a match tiebreak, it's a time violation at 3:00, code violation point penalty at 3:20 and code violation game penalty at 3:40.