The two best male players in the world, Novak Djokovic, right, and Rafael Nadal will compete at the 2018 Mubadala World Tennis Championship. Reuters
The two best male players in the world, Novak Djokovic, right, and Rafael Nadal will compete at the 2018 Mubadala World Tennis Championship. Reuters

When is the 2018 Mubadala World Tennis Championship?: complete guide to Abu Dhabi tournament starring Djokovic, Nadal and Williams sisters