Baku, September 9, AZERTAC Rafael Nadal produced an inspired display to overcome Daniil Medvedev in a thrilling five-set final to claim his fourth US Open crown on Sunday, according to Mirror.co.uk.And after triumphing 7-5 6-3 5-7 4-6 6-4, he moved to within one Grand Slam title of matching his great rival Roger Federer's all-time record.Already the King of Clay, the Spaniard has been a master of the Flushing Meadows hardcourts this New York fortnight but he had to dig mighty deep to beat the Russian and bring his Grand Slam career tally to 19, just one behind Swiss Federer.The 33-year-old left-hander became the second oldest US Open champion in the professional era behind Australian Ken Rosewall, who was 35 when he lifted the title in 1970.