Please can you help me find a very moving story of boy whose female relative pays for a robot to help bring him up when his parents die in an accident. The robot is a superb father substitute having even been programmed with great sporting ability which I seem to remember enables the boy to become a professional sportsman. At the end of the story the boy, now a young man, is instructed by the robot to switch him off as his job is done - it's heart breaking! 
It was in a book of science fiction stories that I think were either award winners or runners up for some award. Thank you for any assistance in finding it.
It was in a book of science fiction stories that I think were either award winners or runners up for some award. Thank you for any assistance in finding it.
