After one year in the Turkish Second League, Atsür moved to Raleigh, North Carolina, U.S. to study business administration at NC State on an athletic scholarship and he graduated in 2007.

After spending one season in Italy, he signed a contract with the Turkish League team Efes Pilsen.

[5] After a successful season with Beşiktaş Cola Turka (27 games in TBL with 30.0 min, 13.1 pts, 48.3% FG, 40.8% 3P, 80.2% FT, 3.0 reb, 4.4 ast, 1.4 stl, 2.4 TO), Atsür signed with Fenerbahçe for two years.

[11] At the 2002 European Championship for Junior Men at Germany, Atsür averaged 22.3 PPG and he was selected to the All-Tournament First Team as the best shooting guard of the competition.

[12] Atsür was also a member of the senior Turkish national team, and figured in Turkey's squad that finished sixth in the 2006 FIBA World Championship held in Japan.