Dad’s coaching style leaves a lot to be desired

DEAR ABBY: My son is a loving husband, father and son. He coaches his 12-yearold son, my grandson, in various sports and sometimes is just a spectator. I’m worried because he often berates his son’s playing ability. He has yelled at him during and after games, whether he is coaching or not. He yelled and screamed at him in front of everyone and later at home.