Mayweather 's inactivity may be catching up to him .
Signs could be showing after Mayweather took a clean right hand to the jaw from Mosley that caused Mayweather to stagger and hold on for Mayweather 's life .
Mayweather 's inactivity may be catching up to him and signs could be showing after he took a clean right hand to the jaw from Mosley that caused him to stagger and hold on for his life .