 On 12 February 2011 Olusegun competed in a non-title six round fight beating Polish journeyman Arek Malek with a World title eliminator still not having come to fruition.Olusegun finally became the mandatory challenger for the WBC light welterweight title on 30 September 2011 with a win over Frenchman Ali Chebah in California.The fight, which went the 12 round distance, saw Olusegun put his opponent down twice in the 3rd round to line up a potential fight against current champion Erik Morales for the full title.