Are there any questions left to be answered by Shakur Stevenson (24-0, 11 KOs)? The WBC lightweight champion delivered on his promise to be more entertaining against William Zepeda on July 12 and dominated. Until someone proves otherwise, he's rated No. 1 in his class by The Ring.

Who, if anyone, can topple him?

THE FIGHTER IN FULL: Mike “The Bodysnatcher” McCallum’s ability to grind foes down in the pocket made him one of the most formidable — and avoided — fighters of his era. — By Adam Abramowitz

SAME SKILLS, NEW THRILLS: Shakur Stevenson talks about shutting down the “runner” critics with his toe-to-toe battle against William Zepeda. — By Tom Gray

OLEKSANDR THE GREAT: After his latest victory surpassed expectations once again, Oleksandr Usyk’s excellence can only be gauged on a historical level. — By Gareth A. Davies

DOWNLOAD COMPLETE: Lauded for his otherworldly skills and willingness to face challenges, Vasiliy Lomachenko took boxing to a new level. — By Michael Rosenthal

CROSSOVER HIT: Tenshin Nasukawa became a star in Japan through kickboxing and MMA – now he intends to prove himself against the best in boxing — By Daisuke Sugiura

INSEPARABLE: The trailblazing Katie Taylor-Amanda Serrano rivalry can now take its place among the greatest trilogies in boxing history. — By Thomas Gerbasi

TRIUMPH AND TRAVESTY: Larry Holmes vs. Michael Spinks was a wakeup call for those who believed heavyweight champions were safe from the “little guys.” — By Don Stradley