Roger Federer, Rafael Nadal and Novak Djokovic are the three biggest names in men's tennis.
The trio, affectionately nicknamed the 'Big-3' for their stellar exploits in the game, are the three all-time title and match win leaders in Grand Slams. Federer leads both categories with 20 Grand Slam titles and 362 match wins. While Nadal's 19 Slam titles are closer to Federer's, it is Djokovic (287) who is closest to the Swiss maestro's Grand Slam match win tally.
Nadal (Roland Garros-12), Federer (Wimbledon-8) and Djokovic (Australian Open-8) are the only players in the Open Era to have won 8 or more titles at a Major. Only Jimmy Connors (109 titles) has won more singles titles than Federer (103), with Nadal (84), Djokovic (78) and Ivan Lendl (94 titles) completing the all-time top 5 title leaderboard.
Among 152 different players to have locked horns with Federer, Nadal and Djokovic, 48 players have never managed a cumulative win against the Big 3. Such has been the trio's dominance on the tennis scene that no player has a winning head-to-head record against each of them.
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Andy Murray (29 wins) has the most Big 3 wins of any player. At the other end of the spectrum, Tomas Berdych (65 losses) has come up short against Federer, Nadal, and Djokovic on more occasions than any other player.
Dominic Hrbaty (5-3; 63%) is the only player with a winning cumulative head-to-head record against Federer (2-1), Nadal (3-1) and Djokovic (0-1) while Dominic Thiem (13-17; 43%) has the next best cumulative success rate against tennis' most famed troika.
On that note, let us now meet the 5 active players who have beaten Djokovic and Nadal but have always come up second best against Federer.
#5 Sam Querrey (3-18)
Sam Querrey is a cumulative 3-18 lifetime against the trio of Federer, Nadal and Djokovic.
Querrey has 1 win from his 6 matches against Nadal, the lone victory against the Spaniard coming in the 2017 Acapulco final.
Against Djokovic, Querrey's 2 wins from 11 matches have come in the third round at 2016 Wimbledon and in the opening round of the 2012 Paris-Bercy Masters.
The tall American is winless in 4 matches against Federer. Querrey has not managed to win a set against the 20-time Grand Slam champion at 2007 Miami, 2008 Roland Garros, 2015 Wimbledon or the 2017 Laver Cup.
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#4 Viktor Troicki (2-22)
The bulk (20) of Troicki's matches against the Big 3 have come against Nadal and Djokovic, with the Serb beating each player once while going 0-2 against Federer.
After going 0-5 against Nadal, Troicki's lone triumph against the Spaniard came in the pair's latest meeting at 2016 Shanghai. The 34-year-old won his first match against compatriot Djokovic in the second round at 2007 Umag, but has since gone 0-13.
Troicki hasn't met Federer on tour since a pair of straight set defeats against the Swiss maestro at 2006 Tokyo and 2011 Doha quarterfinals respectively.
#3 Feliciano Lopez (5-31)
Feliciano Lopez is 5-31 lifetime against men's tennis' most famed troika.
Lopez came closest to a win in his 13 tour meetings with Federer when the Spanish left-hander had a match point against the Swiss in the pair's 2011 Madrid Masters second round meeting.
The 38-year-old's 4 wins over compatriot Nadal came at 2003 Basel, the quarterfinals at 2010 London Queens, second round of the 2014 Shanghai Masters and the third round at 2016 Cincinnati.
Against Djokovic, Lopez's sole win came in the 2016 Dubai quarterfinals when the Serb retired after dropping the opening set 3-6.
#2 Fernando Verdasco (7-35)
Fernando Verdasco has 7 wins in his 42 cumulative meetings against Federer, Nadal and Djokovic.
While the Spanish southpaw is 0-5 against Federer, he has 3 wins from his 20 clashes with compatriot Nadal and is 4-11 against Djokovic.
The 2009 Australian Open semifinalist is one of two players to beat Nadal in the opening round of a Grand Slam tournament (2016 Australian Open), the other being Steve Darcis (2013 Wimbledon). Verdasco's two other wins against his fellow southpaw have come in the third round at 2012 Madrid (on blue clay) and in the second round at 2015 Miami.
Against Djokovic, Verdasco won his first two career meetings - third rounds at 2005 US Open and 2006 Hamburg. Following another pair of wins in 2010 - Monte Carlo semifinals and Rome quarterfinals - the Spaniard has gone 0-6 against Djokovic.
#1 Philipp Kohlschreiber (3-40)
With 40 cumulative losses against the trio of Federer (14), Nadal (15), and Djokovic (11), Philipp Kohlschreiber is one of 9 players to have lost at least 10 times against each member of men's tennis' famed trio.
Kohlschreiber has come up short in each of his 14 tour meetings with Federer, the most recent such occasion coming in the opening round at 2019 Dubai - where the Swiss maestro joined Jimmy Connors as the only players in the Open Era to win 100 career singles titles.
The German veteran's lone win against Nadal from 16 career clashes came in the quarterfinals on the grass of 2012 Halle. Meanwhile, he has beaten Djokovic twice in 13 meetings - 2009 Roland Garros third round and 2019 Indian Wells second round.