Former IBF champion Charles Martin vows to reclaim heavyweight glory as he prepares to face Efe Ajagba in Sunday's Zuffa Boxing headliner at Las Vegas' Meta Apex. The 39-year-old southpaw, who lost his title to Anthony Joshua in 2016, insists he's still championship material after near-misses against Luis Ortiz and Jared Anderson.

Martin (31-3-1, 28 KOs) sees the Ajagba bout as critical to reviving his career under Zuffa Boxing's new promotional banner. His manager Mike Borao claims inactivity has been Martin's biggest hurdle - the fighter has competed just twice since 2020. A win could position him for fights against British prospects like Moses Itauma or another UK appearance.

Ajagba (19-1, 14 KOs) presents a dangerous challenge despite vulnerabilities shown in his 2021 loss to Frank Sanchez. Martin acknowledges the Nigerian's power but remains confident in his conditioning and knockout intentions. With Zuffa planning global expansion, the veteran sees this fight as the first step toward becoming their inaugural heavyweight champion.

Martin's 2016 Joshua defeat at London's O2 Arena hasn't dimmed his British ambitions. 'Once I beat Efe, you'll see me in the UK again,' he told Sky Sports, eyeing potential matchups that could lead to another title shot.