seemingly incidental requirements as “no shirttails out,” “positive attitude,” “promptness,” “good sportsmanship (no strutting, no posturing, no cheap shots),” “never sit down while on the practice field,” “no tank tops in the dining area,” “control of profanity,” “no fighting,” “treat fans with respect and exhibit a professional demeanor,” and many more, including “no smoking on premises,” which applied to all of us.