The two most commonly meet on hard courts with 29 of their 40 matches taking place on the surface. Federer currently leads the head-to-head 16-14 on hard courts. The two are tied 4-4 in hard court Grand Slams, with Federer holding a 3-2 advantage at the US Open and Djokovic leading 2-1 at the Australian Open. To date Federer and Djokovic have only played one Grand Slam final on hard court against each other in their careers, due to being drawn to meet in the semifinals more often than not. They met in four straight US Open semifinals from 2008 to 2011. They also met in two semifinals in Australia, one in 2008 and another in 2011.
Hard court is widely considered to be Djokovic's best surface with Djokovic himself stating that it's his most successful and preferred surface.[61] Their first seven Grand Slam meetings took place on hard court in either the Australian Open or US Open, before finally meeting at the French Open in 2011. Statistically Federer is the best hard court player of the Open Era. He has the most hard court titles of all time with 59, while Djokovic is fourth all-time with 38 titles. On 2 February 2015, Federer and Djokovic were tied with an 83% hard court win percentage - the best of all time. Both players, along with Jimmy Connors and Ivan Lendl, are the only four men in tennis history to have winning percentages above 82% on hard court.