Andy Murray was the defending champion but could not participate this year due to injury. As a result of the withdrawals of Murray and Novak Djokovic from the tournament, they fell outside the top-10 in the ATP rankings for the first time since September 22, 2014 and March 5, 2007, respectively. Krajinović became the lowest-ranked player to reach the final of a Masters 1000 singles event since Andrei Pavel in 2003 and the first qualifier to achieve this feat since Jerzy Janowicz in 2012. All three of these players reached the final in the Paris Masters tournament.