Casual:
Men: A casual shirt with denims (Note: No stone wash jeans this season please!!!). Try it out with a thin V-neck cotton wool and finish the look with scarves. Scarves are alway in for men too. Actually they enhance the look more on men. but please keep it simple and short and don't indulge in girlie patterns, knots etc, please. You can choose desert boots to go with this look.
For a normal day or outdoor games, you can also opt for hats (Let cowboy hats be for the cowboys please; so go and choose wisely).