Daniel Dubois upgraded to world champion after Oleksandr Usyk decision
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![Daniel Dubois upgraded to world champion after Oleksandr Usyk decision](https://i2-prod.dailystar.co.uk/incoming/article30779930.ece/ALTERNATES/s615/0_USYKDUBOIS.jpg)
Usyk vacated his IBF heavyweight world title and Dubois has now been upgraded to the full champion before his fight against Anthony Joshua in September