Your title? Oh you of possessive stance, such a nuance. It's the title. Your post is so last year.
It's our usage osso. The Open Champion, the Master's Champion, the Wimbledon Champion, the Premier League title holders etc etc, the heavyweight champion of the world, all hold their titles until someone else wins it. It's taken for granted. Sour grapes notwithstanding.
I am A2K Pick-Um Champ and am very proud of being. It will be "so last year" when someone else takes it off me and not a moment earlier. It is your role to attempt that feat. The XLV Superbowl Championship title is held by the Green Bay Packers and I assume they mention that fact in their PR and in conversations and will cease doing when time is called next Feb. 5th in the Lucas Oil Stadium, Indianapolis if another team wins the trophy.