"If you asked me two years ago I would have said, 'Nah, there is no way I'm going to get to 2020,'. Now, that doesn't seem far off at all. I definitely think I will be at the very top of my game for another two years. What's another two years after that?''
The article also states that Willis "has subtly increased his mileage the past three years, and has also stuck to a professional strength and conditioning plan for the first time in his career."