The Doncaster star extended his winning run to 20 with a clinical ninth round stoppage win over Fernando Vargas at The O2 in London in April.
That win was McDonnell's fourth successful defence of his WBA crown but the champion is frustrated that his fifth defence is only his second fight of the year.
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That win was McDonnell's fourth successful defence of his WBA crown but the champion is frustrated that his fifth defence is only his second fight of the year.
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