The White Sox gave away almost 40,000 mitre hats emblazoned with their logo, and it was the brainchild of marketing executive Mike Downey.

The White Sox gave away almost 40,000 mitre hats emblazoned with their logo, and it was the brainchild of marketing executive Mike Downey.

An array of creative promotions has played at least a small role in an MLB-wide average attendance of 29,618 through Tuesday’s games, the highest such number for a full season…