Tennis: Federer hails Nadal's equalling of his 20 Grand Slam haul as 'greatest achievement'

October 12, 2020 10:23 AMPARIS (AFP) - Roger Federer saw Rafael Nadal equal his all-time record of 20 Grand Slam titles with a 13th French Open victory on Sunday (Oct 11) and hailed it as "one of sport's greatest achievements".