Cricket at 70?

Just read this article that Prem had linked to, on the orthopaedic association conference, and Sachin's injury.

What I found bemusing was the very last line:

Dr Hoy feels that as long as the rehabilitation of a player is good, age is never really a factor.

"Age is never a factor. A sportsman usually stops playing because he is just bored. I mean, Tendulkar could play till he is 70 if he wants to," said Dr Hoy.

Surely not true in sports which require skills such as strong eyesight, hand-eye coordination, and quick reflexes, such as cricket? Those sort of skills do weaken with age (although to what extent is not entirely known).

I suppose Stephen Redgrave is a good example, he did win medals at the age of 40, and that too with health problems, but even then, that was in an endurance based sport, rather than a skill centric one.