The parents Nestor, from Serbian and Macedonian origin, emigrated shortly after his fourth birthday in 1976 to Toronto in Canada. In 2005 he married Natasa Gavrilovic, December 15, 2008 Nestor's daughter Tiana Alexis was born. In December 2010, Nestor was admitted to the Order of Canada, the following year he received a star on the Canada 's Walk of Fame in his hometown of Toronto. August 7, 2012 Nestor was awarded an honorary doctorate from York University.
Nestor is particularly successful as a doubles player, where he has won 83 titles, including eight Grand Slam singles titles, including three with Mark Knowles, three with Nenad Zimonjic and two more with Max Mirny. In individual he could not place a title on the other hand. On August 19, 2002, he was number one in the double for the first time. In single was his highest placing 58th place in the Mixed he reached the final of the U.S. Open and 2006 Australian Open, which he won with his partner Jelena Lichowzewa 2007 2003. In 2011 he repeated this success with Katarina Srebotnik. In 2013 he won with Kristina Mladenovic the Mixed at Wimbledon in 2014 he and Mladenovic won the Australian Open.
At the Olympic Summer Games 2000 in Sydney Nestor won with his partner Sébastien Lareau the gold medal in men's doubles. In addition, he took back in 1996 in Atlanta at the side of Grant Connell in part, with whom he was eliminated in the second round against the later silver medalist Neil Broad and Tim Henman of Great Britain. At the 2004 Games in Athens, he also defeated in the second round of the French Michaël Llodra and Fabrice Santoro; Partner this time was Frédéric Niemeyer. 2008 Beijing had to Nestor, who took up again with Niemeyer, already in the opening round defeat suffered. Against Jamie and Andy Murray they lost in three sets. 2012 Nestor denied his fifth Olympic Games in London, together with Vasek Pospisil, he reached the second round.
He has so far (as of August 2013) the only tennis player who has won next to all four Grand Slam titles and every tournament the Masters Series at least once (including Hamburg, exclusive Shanghai, which was recorded in 2009 in place of Hamburg in the series) and also the Masters Cup at the end of the year ( 2007 or with Mark Knowles, 2008 Nenad Zimonjic already, each in Shanghai and 2011 with Max Mirnyi in London) and an Olympic gold medal (2000 with Sébastien Lareau ). As the first player in history, he won 900 dual matches.
Since 1992 he has been part of the Canadian Davis Cup team.