Post by Ello Tennis (@tennisblog) on Thu, 17 Nov 16 12:27:51 +0000 View Full Post WATCH: ATP's Top 8 players take on the #MannequinChallenge at the O2 Arena in London Starring: Cilic, Wawrinka, Monfils, Raonic, Thiem, Nishikori, Djokovic & Murray @ellosport #ATP #ATPWorldTourFinals #London