The possibility of retirement for Manny Pacquiao was raised after neurologist Dr Rustico Jimenez speculated as to whether the Filipino was showing the first signs of Parkinson's.

Parkinson's disease is a degenerative disorder of the central nervous system, which affects Pacquiao's world renowned coach Freddie Roach. Dr Jimenez is concerned he can see the first signs now creeping into the physiology of the 34-year-old welterweight.

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