#2 Diego Schwartzman
Diego Schwartzman has endured 16 defeats in as many cumulative meetings against the Big-3 troika of Federer, Nadal and Djokovic.
Schwartzman's four meetings with Federer have occurred twice each on hard court (Indian Wells, Doha) and clay (French Open, Istanbul).
The diminutive Argentinian has met Nadal on nine occasions and has come up short each time. In all but two meetings (2018 Australian Open fourth round and 2018 French Open quarterfinals), Nadal has not dropped a set against the three-time tour-level titlist. Schwartzman is one of three players the Spaniard has beaten nine or more times without dropping a match.
Schwartzman has been closest to a win against a Big 3 member when playing Djokovic. Except for the pair's first meeting in the first round at the 2014 US Open, Schwartzman has taken a set or more off Djokovic on every other occasion.
The Argentine pushed Djokovic the distance in the 2017 French Open third round before going down in five. And in the 2019 Rome Masters semifinals, Schwartzman took a tiebreak set off Djokovic before the Serb could advance to the final.
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#1 Victor Hanescu
Romanian Victor Hanescu holds the ignominy of most cumulative defeats (17) against Federer, Nadal and Djokovic without managing a win against any of them.
Hansecu has had six meetings with Federer between 2004 and 2013 - at three Grand Slam tournaments, and once each at a Masters 1000 tournament, Davis Cup and a ATP 250 tournament. Hanescu's best result was a three-set defeat to the Swiss maestro in the pair's 2010 Indian Wells opening round encounter.
Hanescu is 0/4 against Nadal, losing each time in straight sets. They have met thrice at the Masters 1000 level (2005 Madrid, 2005 Rome, 2010 Rome) and once at the ATP 250 level (Sopot).
In seven meetings with Djokovic spanning between 2005 and 2014 at Roland Garros (twice), four times at Masters 1000 tournaments, and once at a ATP 500 tournament, Hanescu managed a set off Djokovic in the Round of 32 at the 2008 Madrid Masters and 2010 French Open.
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