Dilwyn Porter has worked extensively in business history and sports history and is a former editor of Sport in History. His research activities now focus mainly on amateurism and on entrepreneurship in sport. He recently co-authored English Gentlemen and World Soccer: Corinthians, Amateurism and the Global Game (2018) with Chris Bolsmann. Wray Vamplew is Senior Special Projects Editor for the IJHS and a General Editor of the forthcoming Bloomsbury Cultural History of Sport. His research focuses on economic aspects of sports history.