Former world No. 17 Bernard Tomic will try to make the Istanbul main draw through the qualifying event. The Istanbul event had its inaugural edition in 2015. Tomic, 25, debuted at Istanbul in 2016. The Australian lost in round-of-16 in his debut appearance before he made the quarter-finals at the Turkish clay-court tournament last year.

Tomic, now ranked at No. 185, has yet to play an ATP event this season. The 25-year-old lost in the Australian Open qualifying final round before he lost in round one of last month's Lille Challenger. Tomic's last appearance at an ATP event came in October at Vienna.

The Australian's last win at the ATP level came at the beginning of October at Tokyo. The main draw of Istanbul is due to take place from 30 April - 6 May. It remains to be seen will Tomic clinch a spot in the main draw and make his third straight appearance at Istanbul.

Also read: Tomislav Brkic reflects on Bosnia and Herzegovina's historic DC win