What "Timing" means in boxing?

Question

Im from Guatemala and my english is not good but I always read they say for example "Floyd Mayweather was timing perfectly" or something like that.

What that does mean? If you can say it in spanish, better, but thanks for any answers.

Answer 1

Timing in boxing refers to the ability to respond and hit your opponent before he hits you.

It is a matter of reflexes, countering, and hitting without being hit.  

Answer 2

esto significa que su contador puñetazos fueron muy precisos

Answer 3

se egnifica que floyd mayweather es joto y vale pura verga!