C anada confirmed its first case of the novel coronavirus disease 2019 (COVID-19), a respiratory illness caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), on Jan. 25, 2020. 1 As of Dec. 7, 2020, there were more than 420 000 confirmed cases and nearly 13 000 deaths in Canada. 1 The World Health Organization (WHO) declared a global pandemic on Mar. 11, 2020, 2 which was also the date that physicians from around Canada gathered for a curling bonspiel in Edmonton (63rd Annual Western Canadian Medical Bonspiel, Mar. 11-14, 2020). Curling is a winter sport that originated in Scotland, but today 90% of all curlers worldwide come from Canada. 3 At the onset of the event, there were only 24 confirmed cases of COVID-19 in Alberta (Figure 1). These cases were directly associated with international travel, and no known community spread had been documented. In early March 2020, local public health guidelines in Alberta included limiting indoor gatherings to groups of less than 250 people, 4 and there were no recommendations for using face masks in public places. During the bonspiel, enhanced safety measures included use of hand sanitizers, discouraging pre-and postgame handshakes, and sanitizing curling stones with disinfectant wipes between games. Despite these measures, an outbreak of COVID-19 occurred after the event. The pandemic has greatly affected organized sport around the world, 5 and the experience at this bonspiel aided Curling Canada in its development of a return-to-play guideline. 6