You never know which home run is the last home run you hit.Or give up as a pitcher.The last touchdown you catch. Or throw. Or run.Or get called back because of your holding penalty.Maybe it's your call from the booth. Television. Radio.The last dunk. The last free through.The last foul, when you foul out of the game.All your days on the field, the court are long gone.Trade in your cleats for a suit.The last time you get recognized on the street."Hey, didn't you used to be..."And sign an autograph.