"No one", just because you said so? I don't think so. Just because something is admittedly difficult to quantiy, doesn't mean it doesn't exist. Since Steinbrenner awoke the Yankees from their slumber years with CBS, the year-to-year expectations are simple- winning the World Series. These are expectations that were built into the culture of the organization. Their actions, in turn awoke the Red Sox from their slumber. In terms of the psychology of the breeding of the expectations of this culture, ie, a "winning mindset", this is called operant conditioning (OC). OC works through a set of reinforcers- stimuli that increase and/or strengthen the likelihood of the desired response. There are 4 types of reinforcement, they are all used by the Yankees to get that desired response: Positive and Negative Reinforcement, Punishment and Extinction. For Mariano Rivera, Positive Reinforcement was all that was needed, for Kyle Farnsworth (who had all the tools that Rivera had), none of them worked, up to and including the possibility of Extinction- he was gone.