Roger Federer shattered the men's record for major titles

The argument

The four Grand Slam championships represent the pinnacle of achievement in the sport of tennis. That is why they are the right measure of greatness: they are the tournaments every era's best players prioritise, so a record built on them is not an artefact of scheduling or of avoiding difficult opponents. By that measure Federer did not merely lead his contemporaries but reset the standard for the sport's whole history. In 2002, Pete Sampras won his 14th Slam at the U.S. Open, extending his own record for the most Grand Slam singles titles won by any male player — a mark widely treated at the time as the limit of what a career could contain. Federer bested it in 2009, winning the Wimbledon championship that year to take his 15th Grand Slam title. He then went on to win five more, becoming the first man to reach 20 Grand Slam victories at the 2018 Australian Open. The manner of the record matters as much as the total. Not only did Federer surpass Sampras's overall record; he won as many or more titles than Sampras at each of the four Slam tournaments individually. That closes off the usual objection to aggregate records, which is that a player accumulated them by dominating the conditions that suited him — Federer's advantage held on every surface and at every venue, against a rival who had himself been the benchmark. Nor was the achievement a product of weak opposition. Federer's breakthrough successes ushered in what has been referred to as a golden age for men's tennis, with Federer dominating virtually every Grand Slam alongside his chief rivals, Rafael Nadal and Novak Djokovic, for the better part of two decades. Setting the record while facing the strongest field the men's game has assembled is what makes Roger Federer the greatest tennis player of all time.

Premises

Counter-arguments

Critics reply that the major-titles record is time-bound and has since been overtaken. Rafael Nadal and Novak Djokovic both moved beyond 20 Grand Slams, with Djokovic leading the all-time count while also holding a winning head-to-head against Federer and more weeks at world number one — so 'shattered the record' no longer uniquely crowns him. Greatest-ever debates also weigh head-to-head results, surface versatility and peak dominance, on several of which Federer now trails his two great rivals.

Rejecting the premises

[Rejecting P1] Grand Slam count is a leading measure but not the only one, and it has since been overtaken, so it no longer uniquely crowns Federer. [Rejecting P2] Federer's 20 majors were surpassed by Nadal and Djokovic, and Djokovic leads their head-to-head and weeks at number one, undercutting 'shattered the record' as decisive. [Rejecting P3] Two decades of dominance were shared with rivals who matched or exceeded his achievements, so sustained excellence does not single him out. [Rejecting C] The records cited no longer establish Federer as the greatest over Djokovic and Nadal.