Thorn said:
Heard on the radio that Phil Mickelson had to give the Claret Jug back so they could engrave it this year and give it to Rory. I didn't realize there was only one Claret Jug. The only other sports trophy you have to give back, that I could think of, is the Stanley Cup. Are there others?
What's unique about the Stanley Cup is that it doesn't even belong to the NHL. The Stanley Cup actually belongs to the Hockey Hall of Fame, overseen by trustees. A non-NHL team can actually challenge a team for the Cup. The last time is happened was in the 1970s when the World Hockey Association petitioned the Hall of Fame to challenge the NHL champion for the Cup. The trustees said no, but the NHL did stop referring to its champion as "world champion" for a time in case the challenge was accepted.
The 2005 NHL lockout saw no NHL champ crowned, and they actually considered awarding the Stanley Cup to the top women's hockey team, but it never happened. In 2006, have made it clear that, should the NHL fail to crown a champ again, they will seriously consider awarding the Cup to some non NHL team.