Marcel Granollers of Barcelona, Spain will headline the competitors for the 2019 tournament. Currently No. 105, Granollers is the highest-ranked of the 40 men who received direct acceptance into the 48-player main draw. The 33-year-old has claimed four ATP Tour titles in his career, with his most recent coming in August 2013 in Austria. The Spaniard reached a career-high ranking of No. 19 in the world in 2012 and has recorded wins over six top ten players including Andy Murray, James Blake, and David Ferrer.

Granollers is also an accomplished doubles player, reaching the finals in 2014 with Marc Lopez at Roland Garros and the US Open. He holds 16 career doubles titles on the ATP Tour and was also the doubles champion at the LG&T Tennis Challenger in 2018.

He holds 29 ATP Challenger Tour titles overall (seven in singles, 22 in doubles).

Joining Granollers in the main draw is 2017 Antalya Open champion Yuichi Sugita, 23-year-old Thanasi Kokkinakis, and seven-time Challenger singles titleist James Duckworth. Next Gen ATP Finals contenders JJ Wolf, Sebastian Korda, Max Purcell, Jannick Sinner, Roy Smith, Duckhee Lee, and Stefan Kozlov are also expected to compete.