14Objectives: Despite many reports on best practises regarding onsite psychological 15 services, little research has attempted to systematically explore the frequency, issues, nature 16 and client groups of onsite sport psychology consultancy at the Olympic Games. The present 17 paper will fill this gap through a systematic analysis of the sport psychology consultancy of 18 the Swiss team for the Olympic Games of 2006 in Turin, 2008 in Beijing and 2010 in 19 Vancouver. 20Method: The day reports of the official sport psychologist were analysed. Intervention 21 issues were labelled using categories derived from previous research and divided into the 22 following four intervention-issue dimensions: "general performance", "specific Olympic 23 performance", "organisational" and "personal" issues. Data were analysed using descriptive 24 statistics, chi square statistics and odds ratios. 25Results: Across the Olympic Games, between 11% and 25% of the Swiss delegation used 26 the sport psychology services. On average, the sport psychologist provided between 2.1 and 27 4.6 interventions per day. Around 50% of the interventions were informal interventions. 28Around 30% of the clients were coaches. The most commonly addressed issues were 29 performance related. An association was observed between previous collaboration, 30 intervention likelihood and intervention theme. 31Conclusions: Sport psychologists working at the Olympic Games are fully engaged with 32 daily interventions and should have developed ideally long-term relationships with clients to 33 truly help athletes with general performance issues. Critical incidents, working with coaches, 34 brief contact interventions and team conflicts are specific features of the onsite consultancy. 35Practitioners should be trained to deal with these sorts of challenges. 36