Küçük became the champion in 100 m and 200 m in IPC Athletics Grand Prix held in Grosetto, Italy between 13-14 June 2015 and he advanced to 200 m World Championship. He crowned his happiness with the sponsorship of Bilyoner.com. After the signing ceremony, the successful athlete spoke to NTV Sports and and NTV Radio channels and said “I would like to thank to Bilyoner.com for their social responsibility. I believe that, together, we are going to achieve a lot more in the future.” Küçük stated that his objective was to run in the Final race in World Championship, on 8th July