Gilles Muller Pictures
LONDON, ENGLAND - JUNE 24: Two mascots from the Royal Marsden hospital come onto court with the two mens singles semi-finalist, Marin Cilic of Croatia and Gilles Muller of Luxembourg on day six of the 2017 Aegon Championships at Queens Club on June 24, 2017 in London, England. (Photo by Patrik Lundin/Getty Images for LTA)