Was this ruling correct

[Wongboy]

Agree with RR. Also, it might be difficult to draw a real clear line on this one. If you say that it is OK to tell a player that they should show their hand because they hold the nuts, then can I also tell them to show their hand when I am 90% sure that they have the best hand (maybe because they hold bottom pair and I'm almost certain their opponent has a missed draw)?

Don't get me wrong, I'm all for a rule that requires all hands to be shown at showdown. But if you don't do this, then I think you need to allow for the possibility that someone might muck the winning hand. After all, a player can always protect themself by tabling their hand every time.