YankeeJim: I think people generally consider whatever's posted in your score history is a ranked round.
Speaking of stroke play rounds, this is true, also for Par3s and Par5s.
I suppose that it is necessary for tournaments on these courses. They are also in the number of Ranked Rounds in the players' stats.
"Ranked" is one type of game mode here.
Strokeplay is Ranked or Practice, tournaments are ranked, too.
CTTH is only available as Ranked,
Match play is Scored, Practice or Challenge,
Blitz is Tracked or Challenge
A/S is Scored,
Skins is Practice or Challenge.
Thus, there are ranked rounds that don't count to the average, discounting is necessary.