The Belgrade native has been considered early as one of the best prospect in Europe, but he still has not fulfilled the high expectations.
He was only 18 when coach Svetislav Pesic brought him in Spain to play for Akasvayu Girona.
But due to lack of playing time, he was loaned the following season to Köln, in Germany.
In 2008, Pesic convinced him to come to Red Star Belgrade.
Back in Serbia, he had the opportunity to gain more playing time.
In 2009-10, he averaged 9.9 points and 3.1 rebounds in the Adriatic League.
Keselj was also a member of the great Serbian generation that won Gold medals at both the FIBA U19 World Championship in 2007 and at the U20 European Championship the following year.
Championnat du monde de basket l Campeonato del mundo de baloncesto l Basketball-Weltmeisterschaft l Παγκόσμιο Πρωτάθλημα Μπάκετ l Svetovno prvenstvo v košarki l بطولة العالم في كرة السلة