Resolves to the first of Boston Celtics (NBA Finals win per nba.com), Boston Bruins (Stanley Cup per nhl.com), Boston Red Sox (World Series per mlb.com), or New England Patriots (Super Bowl per nfl.com) to win their championship after April 11, 2026. "Other" only applies to a new Boston team winning one of the four listed championships. Ties on same day resolve alphabetically by team name. If none occur by market close, resolves 'None'. Cancellations or disqualifications follow official league rulings.