IBO super-featherweight title challenge

On 30 July 2008, Billy Dib faced South African Zolani Marali for the IBO super featherweight title. Although Marali had a greater reach, and despite being knocked down in the third round, Dib was able to win on a unanimous points decision (116–114, 116–112 and 114–113), allowing him to capture the title.^[8]

WBO featherweight title challenge

Billy Dib fought against Steven Luevano, the WBO featherweight champion, on 18 October 2008. He was unsuccessful, losing to Luevano in a unanimous points decision. After the match Dib announced that he would come back as a better boxer, stating that he would learn from the experience.^[9]

Return after first loss

On Wednesday, 11 March 2009, at the Campbelltown Cube in Sydney, Dib returned to the ring in a spectacular performance, beating 22-year-old local Campbelltown fighter undefeated Davey Browne Jnr via an 8th round technical decision after Browne was cut above both eyes. The first cut opened after an accidental head clash, while the second came from a clean punch. The fight was stopped on the first cut and went to the scorecards.

On 9 July 2009, Billy Dib and Kenichi Yamaguchi were the main event on One HD's first Superboxer promotion. After being knocked down during the opening stages of the first round, Dib rallied late in the piece to down Yamaguchi.^[10] While Yamaguchi was on his knees, Dib hit him with a late left-handed punch,^[10][11] and although Yamaguchi returned to his feet, he appeared unsteady, leading the referee to stop the fight at 2:59 seconds of the first round in Dib's favour. As Yamaguchi protested the call to the referee Dib without reason shoved Yamaguchi as well as his trainer sparking a small brawl between the two corners.^[10]

Questions regarding the decision were raised after the fight, with some expressing the belief that the punch constituted a foul, and thus Yamaguchi should either have been given time to recover, the fight declared a no-contest, or Dib should have been disqualified.^[11]

Subsequently, the NSW Boxing Authority announced that they are undertaking an investigation into the events,^[12] and at their monthly board meeting on 4 August, the officials determined to change the result to a no-contest.^[13]

IBF featherweight champion

After nine straight victories, in July 2011 Dib took on longtime contender Jorge Lacierva and captured the IBF Featherweight belt via Unanimous Decision. Occasionally getting involved in some wild exciting exchanges, for the most part he boxed a disciplined fight, out-boxing his smaller opponent.

On 19 November 2011, Billy made the first defense of his title, knocking out Italian challenger Alberto Servidei in 2:38 of the first round from a left hook to the body.^[14]

Dib made his second title defense against Eduardo Escobedo on 7 March 2012 in retaining his title with a seventh-round TKO, his aggressive body attack broke down Escobedo who did not come out for round seven.

He lost the title to Evgeny Gradovich on 1 March 2013. A rematch between the two was scheduled for 23 November 2013, when Evgeny Gradovich won by TKO in the 9th round.