Caio Mello’s secondment to the British Library, to work with the team at the UK Web Archive, has resulted in the publication of three blog posts discussing how he has used the archived web to study the topic of Olympic legacy. The first considers the question ‘What is left behind? Exploring the Olympic Games legacies through the UK Web Archive‘; while the second asks ‘Boris Johnson, fertility and the royal baby: how far does the concept of Olympic Legacy go?‘. The final post in the series presents Caio’s research, with Daniela Major, ‘Exploring media events with Shine‘, the prototype search interface for the archive of the .uk country code Top Level Domain from 1996 to 2013. Web archives are a key primary source for the history of the late 20th and early 21st century, and Caio’s blog posts help to demonstrate their value for the study of transnational sporting events like the Olympic Games.