Roger Federer and Rafael Nadal have met a whopping 37 times over the course of their legendary careers, three times already in 2017.
They've played just about everywhere — including on a floating court. Take a look back at each of their memorable showdowns (plus a couple of exhibition matches).
Jayne Kamin-OnceaUSA TODAY Sports
2004: Miami Round of 32 (Nadal wins 6-3, 6-3)
Their first meeting came in the spring of 2004 at the yearly event in Key Biscayne, Fla. The up-and-coming Nadal — then without a single Grand Slam title and just 17 years old — had no trouble with Federer, serving 81 percent in the victory.
The duo was back in Miami a year later for their second encounter — the first of many five-set classics between them. Federer rallied from two sets down to take out Nadal in the championship match.
2005: French Open semis (Nadal wins 6-3, 4-6, 6-4, 6-3)
Just two months after their second Miami battle, they had their first French Open and Grand Slam showdown. Nadal won in four sets en route to his first career Grand Slam title in his debut appearance at Roland Garros.
2006: Dubai final (Nadal wins 2-6, 6-4, 6-4)
The duo took their rivalry to the Middle East for the fourth installment. Nadal bounced back from a set down to notch his third win in four tries against Federer — and claim another title.
2006: Monte Carlo final (Nadal wins 6-2, 6-7 (2), 6-3, 7-6 (5))
Back on Nadal's beloved clay courts, Federer gave the Spaniard a run for his money before falling in four sets in the first of three straight meetings between these two in the Monte Carlo Masters title match.
Federer snapped a five-loss losing streak to Nadal in their first showdown at Wimbledon. It gave Federer his fourth straight Wimbledon title and second career victory over Nadal.
2006: Masters Cup semis (Federer wins 6-4, 7-5)
Federer kept the momentum on his side with a victory at the year-end Masters Cup in Shanghai. He went on to win the title and complete a masterful 2006 season in which he went 92-5 and won three Grand Slam titles.
2007: Monte Carlo final (Nadal wins 6-4, 6-4)
Nadal regained control of the rivalry the following spring in Monaco, beating Federer in the final of the Monte Carlo Masters for the second straight year.
Though it doesn't technically count in their career head-to-head record, we'll never forget the exhibition match the two played on a half-clay, half-grass court in early May 2007. At the time, Nadal had won 72 straight matches on clay and Federer had won 48 straight on grass.
2007: Hamburg final (Federer wins 2-6, 6-2, 6-0)
Federer ended that clay winning streak just weeks after the exhibition, beating Nadal in the final of the Hamburg Masters in late May, giving him high hopes to finally conquer the French Open.
2007: French Open final (Nadal wins 6-3, 4-6, 6-3, 6-4)
The Hamburg win ended up not signifying a changing of the Roland Garros guard. Nadal kept his perfect record at the clay Grand Slam, beating Federer in four sets for his third straight title in Paris.
For the second straight year, the pair met in the Wimbledon final. Federer was forced to sweat for the first time in a while on the grass, but he pulled out the classic five-set win. Little did we know what was in store for us one year later ...
2007: Masters Cup semis (Federer wins 6-4, 6-1)
Federer scored his easiest win to date over Nadal in their second straight meeting in the year-end Masters Cup semis. Federer went on to win the title, his second straight year with three Slam crowns and a victory in Shanghai.
2008: Monte Carlo final (Nadal wins 7-5, 7-5)
Back in the Monte Carlo final once again, Nadal beat Federer for the title for the third straight year in a tightly contested two-set match.
2008: Hamburg final (Nadal wins 7-5, 6-7 (3), 6-3)
Nadal again celebrated over Federer on the clay, beating his Swiss rival in a three-setter in nearly three hours to get revenge for last year's defeat in the final of the same event. It was Nadal's 10th win in 16 tries in the rivalry.
2008: French Open final (Nadal wins 6-1, 6-3, 6-0)
In his most virtuoso performance of the rivalry, Nadal made Federer look like a lowly qualifier in his efficient rout at Roland Garros. it took Nadal just one hour, 48 minutes to win his fourth straight French Open crown.
One of the greatest matches ever played, Nadal finally bested Federer at Wimbledon in a five-set epic that finished in near darkness due to multiple rain delays. Actual time of the match: four hours, 48 minutes. Total points won: 209 for Nadal, 204 for Federer.
2009: Australian Open final (Nadal wins 7-5, 3-6, 7-6 (3), 3-6, 6-2)
Nadal finally came through in a hard-court Slam with yet another thrilling five-set showdown with Federer. The two traded sets over the first four before Federer — reduced to tears after the match — unraveled in the fifth set to hand the trophy to Nadal.
2009: Madrid final (Federer wins 6-4, 6-4)
Federer once again got the best of Nadal in a clay-court final in the final warm-up before the French Open, leading many to speculate that Federer would finally win his French Open title. He did, but he didn't have to go through Nadal. The Spaniard was stunned in the fourth round that year by Robin Soderling.
2010: Madrid final (Nadal wins 6-4, 7-6 (5))
After a full year without facing each other, Federer and Nadal met once again in the Madrid final. Nadal got him back this time, but once again they did not face each other at Roland Garros. Soderling intervened again, beating Federer in the quarterfinals.
2010: ATP finals title match (Federer wins 6-3, 3-6, 6-1)
Though they didn't meet in a Grand Slam for the first time since 2004, Federer and Nadal did close the season with their first-ever encounter at the year-end ATP World Tour Finals. A sharp-serving Federer took down Nadal in three sets to win his fifth season-ending title.
2010: 'Match for Africa' charity event (Nadal, Federer win one match each)
Nadal and Federer paired up in late December for 'The Match for Africa', an event organized to raise money for the Roger Federer Foundation, which supports sporting activities for underprivileged children in Africa and in Switzerland. They played two matches in two days with Federer winning the first 4-6, 6-3, 6-3 in Zurich and Nadal winning the second 7-6, 4-6, 6-1 in Madrid.
2011: Abu Dhabi final (Nadal wins 7-6, 7-6)
The duo started off 2011 meeting in the Abu Dhabi World Tennis Championships final, an exhibition event. Nadal scored another victory over Federer in a tight two-set match.
2011: Exhibition before the Qatar Open
Clearly this one was just for fun, but Federer and Nadal met on a floating court off the coast of Doha before the season-opening Qatar Open in 2011. No word on a winner.
2011: Miami semifinal (Nadal wins 6-3, 6-2)
Nadal needed just over an hour to dispatch Federer in their semifinal match during the Sony Ericsson Open in April in Key Biscayne. It was the first time they had played one another in the U.S. since 2005 at the same tournament.
2011: Madrid semis (Nadal wins 5-7, 6-1, 6-3)
Nadal got the better of Federer as they met for the third straight year at the French Open tune-up in Madrid. After a glimpse of the top-form Federer in the first set, the Spaniard bounced back with authority to take the match in three sets.
2011: French Open final (Nadal wins 7-5, 7-6 (3), 5-7, 6-1)
In their eighth meeting in a Grand Slam final, Nadal rallied from a 5-2 deficit in the first set to take early control of the match, then shook off a third-set slip-up to win the fourth set to close out the match. The win gave Nadal his 10th Grand Slam title as Federer remained winless against his rival at majors since Wimbledon in 2007.
2012: Australian Open semis (Nadal wins 6-7 (5), 6-2, 7-6 (5), 6-4)
Their highly-anticipated semifinal match at the 2012 Australian Open didn't disappoint. The four-set thriller saw two sets won in tiebreaks with neither Federer nor Nadal giving up. But it was Nadal who had the upper hand after the first set and won the match.
Getty ImagesLucas Dawson
2012: Indian Wells semifinals (Federer wins 6-3, 6-4)
In their first-ever meeting at the Southern California Masters series event, Federer had little trouble in a quick straight-sets win.
2013: Indian Wells quarterfinals (Nadal wins 6-4, 6-4)
It would be exactly one year until the two met again at Indian Wells, with Nadal turning the tables. Nadal won easily as he kick-started a stellar spring season.
2013: Rome final (Nadal wins 6-1, 6-3)
Continuing his clay mastery, Nadal waxed Federer in a no-contest affair in the Roland Garros tune-up. It was Nadal's 13th win in 15 clay-court meetings with Federer.
For the first time since the 2012 Australian Open, it wasn't a straight-sets affair when these two met. Nadal shook off a tight loss in the opening set to rally back and win in three.
2013: ATP finals semifinal match (Nadal wins 7-5, 6-3)
Nadal finished up his brilliant 2013 season with a win over Federer in the semis before losing to Novak Djokovic in the final. Nadal went 4-0 against Federer on the year.
2014: Australian Open semifinals (Nadal wins 7-6 (4), 6-3, 6-3)
Federer came into the match playing some of his best tennis in recent memory, but he was still no match for Nadal. The Spaniard dashed Federer's hopes with a quick straight-sets victory.
2015: Basel final (Federer wins 6-3, 5-7, 6-3)
On his home court in Switzerland, Federer won their first match in nearly two years in a three-set affair at the Swiss Indoors. The win snapped a five-match losing streak against Nadal.
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2017: Australian Open final (Federer wins 6-4, 3-6, 6-1, 3-6, 6-3)
If there is such a thing as a "lopsided" five-set match between these two, this was it. In their first full-distance Grand Slam meeting that didn't feature at least one tiebreak set, Federer roared back from a break down in the fifth to win an improbable 18th major, a full five years after his last one. It was also the first time he had beaten Nadal at a major since Wimbledon in 2007. He was 0-5 in between.
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2017: Indian Wells Round of 16 (Federer wins 6-2, 6-3)
Federer's dream start to 2017 continued at the BNP Paribas Open, where he routed Nadal in a tidy 68 minutes en route to his second huge championship of the year. The Swiss was at his remade best in this one, pulverizing balls all over the court and never letting Nadal have a sniff of an edge. Amazingly, it marked the first time in the rivalry that Federer had recorded three straight wins.
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2017: Miami final (Federer wins 6-3, 6-4)
Federer extended his winning streak over Nadal and his amazing start to 2017, taking out Rafa in the final in Key Biscayne — site of their first two meetings ever. After a tense opening to the first set, featuring multiple break chances for both players, it was Federer who cracked Nadal's serve first and won the set. He finished the job in the next set, giving him all three of the biggest titles of the year to date.