Massive underdog Zak Chelli may have pulled off the biggest upset in modern British boxing history and possibly European boxing as well. Some bookmakers had Chelli (17-3-1) as high as a 31-1 underdog going into the bout against Cuba’s David Morrell (12-2, 9 KOs). Chelli, a school teacher outside the ring, taught Morrell a lesson he will not soon forget — stopping the former world champion on his feet in the 10th round. The British fighter of Italian and Arab ancestry accepted the bout on just four weeks’ notice. Clearly, Chelli and his father, who trains him, saw something in Morrell they thought they could take advantage of. — DAZN Boxing (@DAZNBoxing) May 9, 2026 The odds reflected Morrell’s pedigree. The Cuban entered the night as a former world champion and one of the sport’s most avoided fighters. Yet as the rounds passed, Chelli looked like the hungrier man. Morrell’s urgency faded, while Chelli’s looked like he had been starving for such an opportunity.…