Sunday was a great day of sport. Watching football, the Carling Cup final, and also the World Matchplay golf. Fortunately, I did go for a run in the morning just to make sure I didn't spend all day on the sofa!

Sportsmanship and gamesmanship take many forms. We all remember Diego Maradonna’s "hand of God" in the 1986 football World Cup. Tennis players have been guilty too, employing delaying or distracting tactics to put their opponents off. Rugby players inhabit the dark world of the scrum, where sly violence is unseen by the referee. There are very few disciplines in fact where it doesn’t happen.

Karl Steptoe is a sport psychology consultant, director of a mind to perform Ltd, Golf Mental Ltd and a PGA Advanced Professional. His experiences as a player and coach ignited a fascination with the psychological demands of the game which lead to a BSc (hons) in Psychology, an MSc in the Psychology of Sport & Exercise (Loughborough University) and continued research into performance under pressure, motivation and mental toughness for his PhD.