Spain's Rafael Nadal celebrates after defeating Argentina's Juan Martin del Potro during their 2017 US Open Men's Singles Semifinals match at the USTA Billie Jean King National Tennis Center in New York on September 8, 2017. World number one Rafael Nadal powered into his 23rd career Grand Slam final on Friday, routing Argentina's 24th-seeded Juan Martin del Potro 4-6, 6-0, 6-3, 6-2 at the US Open. / AFP PHOTO / Jewel SAMAD