Nadal regained the dominance on serve he had enjoyed for most of the tournament as he saw out the set until he played a poor game at 2-1 down in the second, a double fault and a backhand error giving Djokovic the break to love.
It runs on the old Mars-Venus dichotomy of emotional repression versus expression, but brings out a far stranger and more specific current of underlying discord, regarding the isolating comforts of prosperity, the fault lines of friendships, and the murky depths of what passes for love.