Sports Mecca

Metros whose combined sports composite (major league teams weighted double, total professional teams across all leagues, major sporting events weighted triple) clears 40. Captures the cities where sport is part of the civic identity, from London at the top through the second-tier metros that punch above their weight on a single league. Fifty-three metros qualify. Below the threshold a metro might have a couple of teams but not the volume or marquee-event presence that defines a sports city.