2018 Diema Xtra Sofia Open – Singles
Grigor Dimitrov was the defending champion, but withdrew before the tournament because of a shoulder injury. Mirza Bašić won his first ATP title, defeating Marius Copil in the final, 7–6(8–6), 6–7(4–7), 6–4. Seeds The top four seeds receive a bye into the second round. Draw Finals Top half Bottom half Qualifying Seeds Qualifiers Lucky losers Qualifying draw First qualifier Second qualifier Third qualifier Fourth qualifier References External links Main Draw Qualifying Draw Sofia Open 2018 Singles