I remember seeing pictures of the Indians games in Cleveland during the 30’s-40’s, all the men wore hats and suit coats.

They looked so dressed up compared to today’s attire at a ballgame.  But there are exceptions.

“Former San Francisco 49er Coach Mike Nolan fought to wear a business suit on the sidelines during football games. One of the reasons for this was that he wanted to make it easy to spot the man in charge. The men’s suit, whose heritage stems from military garb, was designed to highlight a man’s strengths.”

Positive assumptions
Well dressed people are given a leg up in many respects  http://artofmanliness.com/2008/10/30/mens-fashion-well-dressed/