Klitschko delivered the only defeat of Pulev's 26-fight career in 2015 but the Bulgarian has since won five fights in a row, taking him to a position as the IBF's mandatory challenger.
Klitschko delivered the only defeat of Pulev's 26-fight career in 2015 but the Bulgarian has since won five fights in a row, taking him to a position as the IBF's mandatory challenger.