Gael Monfils is back in a Grand Slam semi-final after an eight-year wait after pummelling fellow Frenchman Lucas Pouille 6-4, 6-3, 6-3 to reach the US Open last four.

14-time Grand Slam champion Rafael Nadal crashes out of the US Open, falling in a five-set thriller to 22-year-old Frenchman Lucas Pouille.