True ~~ but half the time McEnroe would beat Borg, wouldn't he? 14 matches during their career; in head to head winnings, there is a tie betwen McEnroe and Borg.

So you can't really lay down a hard & fast principle of it. Some stay calm & win steadily; some get emotional & angry & psych themselves up to winning that way. The first way possibly works more often, but by no means invariably.

~M~