Isner to Replace Nadal at 2018 ATP Finals   ATP World Tour (November 5, 2018) LONDON — John Isner will compete at the 2018 Nitto ATP Finals, to be held at The O2 in London from 11-18 November, following the withdrawal of Rafael Nadal due to injury. Isner will join Novak Djokovic, Roger Federer, Alexander Zverev, Kevin Anderson, Marin Cilic, Dominic Thiem and Kei … [Read more...] about Isner to Replace Nadal at 2018 ATP Finals