Wry wit and knowing smiles await the loser. It will be just awful. Matt Kenseth will compete against his 16-year-old son, Ross, on Saturday in a limited Late Model race at Madison (Wisc.) International Speedway. They’ve never competed against each other in an actual race on a track. Sarcastic Midwestern bragging rights figure to be the prize. And neither one will want to be on the business end of that.