Quinn Rooney/Getty Images
By SI.com Staff
January 16, 2015

Several top players partnered with former Grand Slam singles champs to help mentor and coach them through the season. Novak Djokovic added Boris Becker to his team; Roger Federer teamed up with Stefan Edberg, Kei Nishikori paired up with Michael Chang; and 2014 U.S. Open champion Marin Cilic partnered with Goran Ivanisevic. In the graphic below, explore each player's specific area of improvement and see what the stats say -- did these partnerships bring success on the court? 

Check SI.com's Australian Open Daily Data Visualizations hub page throughout the whole tournament for the latest data-driven infographics and charts. 

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