From fightnews.com
Heavyweight Cengiz Koc challenges European heavyweight champion Paolo Vidoz on Saturday in Berlin. In his fight against Nikolai Valuev, Vidoz suffered a broken lower jaw. Two titanium plates were inserted to hold the jaw and the new combat-name of Vidoz is "Titanium Jaw." Today Valuev, now the WBA heavyweight champion, showed his training colleague and friend Koc how to break a jaw. Koc's hopes Valuev's experience will help him seize the Euro heavyweight belt.
i dunno i guess sen-giz cock really unless his last name is pronounced like kos where the c is a s sound if not then thats a fucked up name
Chengiz Katz