Yumrukaya and his teammate İhsan Emre Vural took first place in the lightweight men's coxless pair event in the 2004 Under 23 World Championships held in Poznań, Poland.
Yunus Emre | Filiz Vural | Emre Belözoğlu | İhsan Hakan | İhsan Emre Vural | Emre Aşık | Emre Aydın |
İhsan Emre Vural and his teammate Ahmet Yumrukaya became the first world-champions in the history of Turkey when they got first place in the 2004 World Rowing Under 23 Championships held in Poznań, Poland.