Some boxing fights change everything in just a few moments. This collection brings together the biggest upsets in BOXING, where underdogs defied expectations, favorites fell short, and unexpected victories changed the course of careers. Parts 1–4 feature memorable fights, surprising knockouts, and moments that left a lasting mark on professional boxing. From unexpected counters to perfectly timed attacks, these fights prove that nothing is guaranteed once the bell rings. Watch as underdogs step into the ring with something to prove and turn the tables when nobody sees it coming.