The Nigerian Nightmare finally achieved his sweetest dream. Samuel Peter stopped Oleg Maskaev in the final seconds of the sixth round Saturday night, claiming Maskaev's WBC heavyweight title with one last flurry of powerful punches.

Peter (30-1, 23 KOs) was more potent and more poised than the 39-year-old champion in front of a lively sellout crowd at Plaza de Toros, Cancun's bullfighting ring and...