Swansea tennis expert David Mercer umpired a Wimbledon final shootout between John McEnroe and Jimmy Connors and survived. He talks to Peter Jackson about respect and tantrums in sport, ensuring fair play, and how Llanelli's Edward James - the man in the chair during McEnroe's You Cannot Be Serious outburst - helped him on his way. He recalls surviving a Nastase outburst in Romania. And he tells how he moved from sharing a dressing room with the legendary Ken Rosewall to adjudicating at matches to a career commentating for the BBC. Show less