What exactly is a «choke factor»?
You have probably seen this somewhere, these fans' rants online or newspapers' articles where reporters and writers accuse a player. Most of such things are related to a player «chocking» the game or the important moment of it.
Such «chokes» usually take place during the key moments, like the serving for a set or match point. These situations impose a great amount of stress even on elite veterans, which puts players' mental strength and self-control on a test.
One research has shown...
to read the whole article.