Roger Federer vs. Rafael Nadal: Rating the Competition They've Faced

An analysis of the competition faced by Roger Federer and Rafael Nadal during their respective careers creates the type of toxic bloody chum that even a great white shark would swim away from.

A topic so fraught with danger that, in the form of a ski run, it would simply be blocked by colored sticks along with a sign strung between them announcing: "Avalanche area: Do not cross."

The reason for such caution is that at least a few wars have arguably been fought between groups sharing less animosity than the Federer and Nadal camps.

The Federer side is quick to highlight its man's record number of Slams and total weeks at No. 1, while those supporting Nadal point to a one-sided head-to-head rivalry and a vacuum of talent before the Spaniard came into the picture.

Obviously, with Federer and Nadal both still active on tour, there are more than a few stories left to be written in each player's biography. But enough has already been put down in history that a framework for comparing the competition they've faced in their respective careers can at least be drafted.

There's no doubt any analysis of the competitive environment each player faced during their career will need to be tweaked after they are both retired. Or, considering the intensity of this particular debate, ground into dust.

The Findings

Such a hotly contested topic means the findings must hinge on objectively based data—an imperfect yet rigid requirement given the varying dynamics of different eras in the sport's history.

A convenient aspect of these two players' careers is that they partially overlap, making comparisons a bit easier than otherwise.

Given the noted complexity of the subject matter, let's start with something simple. A basic list of each player's primary rivals can be generated by looking at whom Federer and Nadal have faced most often on court.

The following list represents each player's top five rivals by total meetings and associated record against:

Roger Federer

(38) Novak Djokovic (20-18)

(33) Rafael Nadal (10-23)

(27) Lleyton Hewitt (18-9)

(24) Andy Roddick (21-3)

(23) Andy Murray (12-11)

Rafael Nadal

(43) Novak Djokovic (23-20)

(33) Roger Federer (23-10)

(29) David Ferrer (23-6)

(23) Tomas Berdych (19-4)

(21) Andy Murray (15-6)

What's eminently clear from the above information is that the "Big Four" is probably more than just a slight misnomer.

Instead, Djokovic, Federer and Nadal appear to have formed a "Golden Triangle." Each player counts the other two as his top rivals by matches played.

This is especially interesting given the fact that Djokovic and Nadal are five-six years younger than Federer. At minimum, this proves that Djokovic and Nadal's level of consistency is higher than any of Federer's direct contemporaries (by age). It's also difficult to overlook the fact that Nadal is the only one in the triangle with a winning record against the other two.

Andy Murray does count within the top five rivals of both Federer and Nadal, so it is worthwhile to examine each player's record against the Big Four:

Roger Federer vs Big Four: (42-52, .446)

Rafael Nadal vs. Big Four: (61-36, .628)

While Nadal's head-to-head results against Federer certainly skew the above statistics, that should in no way count against the Spaniard. Nadal also has a far superior record against Murray and clearly has the more enviable stat line when comparing the overall head-to-head records of both players against the Big Four.

Moving on, a natural next step is to look at each player's respective opponents in each of his Grand Slam final appearances. Things get slightly more complicated at this stage of the analysis—mostly because of the age gap.

To date, Federer has appeared in 25 Slam finals, while Nadal has appeared in 20.

Below is the list of opponents Federer and Nadal have faced in the championship round of Grand Slam competition.

The first parenthetical figure indicates the total number of times they have met each opponent in a Slam final. The opponent's name is then followed by his career total in Slam titles, his overall number of appearances in Slam finals and his total number of career titles (Slam and otherwise).

Roger Federer (17 wins, 8 losses):

(8) Rafael Nadal: 14, 20, 65

(4) Andy Roddick: 1, 5, 32

(3) Andy Murray: 2, 8, 33

(2) Novak Djokovic: 8, 15, 52

(1) Andre Agassi: 8, 15, 60

(1) Marco Baghdatis: 0, 1, 4

(1) Juan Martin del Potro: 1, 1, 18

(1) Fernando Gonzalez: 0, 1, 11

(1) Lleyton Hewitt: 2, 4, 28

(1) Mark Philippoussis: 0, 2, 11

(1) Marat Safin: 2, 2, 15

(1) Robin Soderling: 0, 2, 10

Rafael Nadal (14 wins, 6 losses):

(8) Roger Federer: 17, 25, 85

(7) Novak Djokovic: 8, 15, 52

(1) Tomas Berdych: 0, 1, 10

(1) David Ferrer: 0, 1, 24

(1) Mariano Puerta: 0, 1, 3

(1) Robin Soderling: 0, 2, 10

(1) Stanislas Wawrinka: 1, 1, 9

Looking at the overarching themes, it's clear why Federer and Nadal have such electricity crackling through their rivalry. The two are their own worst enemies in terms of fighting for Grand Slam hardware. However, Djokovic is now creeping up Nadal's list of biggest rivals in terms of championship matches in Grand Slam events.

Another notable takeaway is that Nadal's finals are concentrated against the other two sides of the Golden Triangle—two players, along with Nadal, who constitute the game's most decorated players in the current era.

Consequently, Nadal has faced an opponent who won at least eight Slams in his career on 15 of 20 (75 percent) possible occasions. In contrast to that staggering strength of schedule, Roger Federer has faced opponents who won two career majors or fewer in 14 of his 25 (56 percent) Slam finals.

That means nearly three-quarters of the time Nadal was forced to play the best of his generation, while in more than half his finals Federer faced players with far less historically relevant credentials.

Additionally, Federer has only four wins in Slam finals against players who won eight or more Slams in their career, while Nadal has 10 such victories.

Digging a little deeper into the numbers fleshes out a similar theme. Two statistics are of particular interest when building the profile of the average opponent Federer and Nadal have faced respectively in Slam finals.

The first statistic is the average number of Slam titles held by each player's average opponent in major finals. The second statistic is the average number of career titles by the same average opponents each faced.

Average number of career Slam titles held by opponents in major finals:

Federer: 6.7

Nadal: 9.6

Average number of career titles (Slam and otherwise) held by opponents in major finals:

Federer: 40.3

Nadal: 55.0

Essentially, the above stats mean the average opponent Federer faced in Grand Slam finals held approximately seven Slam titles and 40 overall titles. For Nadal, the numbers increase considerably and equate to an average opponent who held almost 10 Slams and 55 career titles.

While tennis players certainly can't control the level of competition facing them on the other side of the net, that reality doesn't change the fact that judgements can be formulated around the sum of its relative difficulty.

Although there's no perfect way to compare players who weren't born on the same day of the same year, there are effective ways to examine the competitive environments they each respectively faced.

Discounting emotional and subjective biases, it seems difficult to overlook the fact that Nadal has, on average, faced more decorated players in Grand Slam finals than Federer.

Additionally, Nadal has had more success against the more decorated players, bringing home 10 wins against players holding eight or more majors versus Federer's total of only four.

It seems somewhat obvious that Nadal experienced this hyper-competitive environment because his career timeline bridged the primes of Federer and Djokovic.

Federer and his fans will, of course, wonder what might have been in a world without Nadal, but the Spaniard and his followers can one-up the Swiss maestro in that department.

Nadal has had the unfortunate luck of dealing with two extraordinary players during the peak of his career.

Any analysis that compares the competitive environments Roger Federer and Rafael Nadal faced in their respective careers cannot be considered complete until after they have both retired.

However, the data available to this point seems to suggest that Nadal has faced a somewhat higher quality of opposition thus far in his career, especially as it relates to major finals. The fact that Nadal also holds a far superior record over the Big Four cannot be overlooked either.

Regardless of your ultimate view on the above data, one certainty is that without the incredible level of competition observed over the last decade, fans of the sport would have never been treated to this Golden Age of tennis in the first place.