Sky Sports' tennis analyst Miles Maclagan has called Roger Federer's latest mind-blowing achievement in Rotterdam "remarkable".
Sky Sports have been delving in the archive books and crunching the numbers in order to find out the secret of Roger Federer's success.
Roger Federer celebrated his return to the top of the world rankings by winning in Rotterdam on Sunday, and declared it "very special".
Roger Federer claimed a 20th Grand Slam title at the Australian Open and then became the oldest-ever world No 1 - but is he the greatest sportsperson of all time?
Roger Federer celebrated the regaining of his world No 1 ranking by winning the Rotterdam Open on Sunday.
Roger Federer's Rotterdam Open victory as it happened.
Roger Federer won his first match since regaining the world No 1 ranking on Saturday against Andreas Seppi.
David Goffin was forced to retire during his Rotterdam Open semi-final against Grigor Dimitrov after a ball hit his eye.
Mark Petchey has praised Roger Federer's undiminished passion for tennis late on in his career after the Swiss superstar became the oldest world No 1.
Roger Federer became the oldest world No 1 in tennis history with victory against Robin Haase at the ABN Amro World Tennis Tournament in Rotterdam.
Roger Federer becomes the oldest world No 1 in tennis history after beating Robin Haase in Rotterdam's ABN AMRO World Tennis Tournament.
Roger Federer is one win away from becoming world No 1 for the first time in more than five years. Will the 20-time Grand Slam champion make more history?
Roger Federer has returned to the summit of men’s tennis and became the oldest world No 1 in the sport’s history.
Philipp Kohlschreiber may have lost his last-16 clash at Rotterdam's ABN AMRO World Tennis Tournament to Roger Federer, but he produced the shot of the match.
Roger Federer is just one more victory away from becoming the oldest world No 1 ever.
Roger Federer began his quest to reclaim the world No 1 ranking with a ruthless victory over Ruben Bemelmans at Rotterdam’s ABN Amro World Tennis Tournament.
Robin Haase fired a whipped forehand winner during his first-round victory over countryman Thiemo de Bakker at Rotterdam's ABN Amro World Tennis Tournament.
Stan Wawrinka crashed out of Rotterdam's ABN Amro World Tennis Tournament at the hands of world No 259 Tallon Griekspoor on Tuesday.
John McEnroe says it's "beyond belief" Roger Federer can play the way he does at the age of 36 as the Swiss legend looks to regain world No 1 spot in Rotterdam.
Former Rotterdam Open champion Tomas Berdych booked his place in the second round of this year's tournament along with Alexander Zverev.
©2018 Sky UK