The following rule was removed from Version 2 of the 2011 TDA Rules, therefore, Rule 42 was renumbered to Rule 41 in Version 2:
"14. Uncontested Showdown. In a non all-in showdown, when all opponent(s) cards have been mucked without being revealed, the last live hand wins. Opponents who muck at showdown without revealing their hands also lose the right to ask to see the winning hand."