January 28, 2018 - Haskovo, Sofia, Bulgaria - Bulgaria's Grigor Dimitrov gives open tennis lessons to children at his hometown of Haskovo, Bulgaria before the DIEMA XTRA Sofia Open 2018. Hundreds children and fans comes to the town central tenis court to receive signature and to take a picture with the 3rd of world men's tennis, Haskovo, Bulgaria on January 28, 2018  (Credit Image: © Hristo Rusev/NurPhoto via ZUMA Press)