SLOW

Commentators whose comments seem to impact on players' performance, have what is known in India as the black tongue. This can often be seen in cricket when a player is said to be doing well, only to watch them go out the next ball, or when it is commented that a bowler hasn't bowled any no-balls in the whole innings - only to bowl a no-ball the very next ball.
Also known as the commentators' curse, the black tongue seems to be a common incidence in the sporting world and professional commentators do well to count their words carefully so they don't put the voodoo on any players.
The players cannot possibly hear the commentators' words, so they should not be directly affected, but somehow this seems to be the case. What would be a rational explation for this?
Do the commentators pick up on some of the players' body language and verbalise it, making it seem like it's their own thoughts?
Do they create a quantum split in the universe whereby the player is taken out of a Schrodinger's cat-like box?
Are they made to say the words by a coincidental chaotic configuration in the definition of the sport where predictions mean nothing and things can go either way?
Do they draw so much attention to the live event that there is an increase in energy or tension, which tends to confuse or distract the players?
Do they really have black tongues or the ability to put curses, wittingly or otherwise, on those on whom they comment?
Also, should commentators who exhibit this tendency be prevented from public commentary in order to protect possibly affected players?
Suffice to say, I find this to be a very interesting phenomenon that is well described by the words black tongue.