Claressa Shields, seen here walking out for a fight in February, tested free agency after her last title defense in July. Nic Antaya / Getty Images NEW YORK — Claressa Shields, arguably the biggest ...

NEW YORK — She came from the cracked concrete floor of the Berston Field House in Flint, Michigan, with its blood-stained canvas ring, and brittle concrete walls. Every time Claressa Shields hammered ...

Claressa Shields is not only the undisputed heavyweight champion of the world, a five-division world champion, and a two-time Olympic gold medal fighter; she’s also now the highest-paid woman in the ...