Yannick Zittlau
Yannick Zittlau is a 14-year old German Sport Stacker who holds the current unofficial overall world record for the cycle stack (ISSF, not recognized by the WSSA, due to use of non-authorized equipment). He broke the record with a time of 7.26 seconds at an ISSF stacking event. On the internet, he goes by the screenname SalatblattXXL, and has uploaded a YouTube video of a 6.63-second cycle. He has also made unverified claims that his personal record time is 6.58 seconds. During a WSSA-sanctioned German National Sport Stacking Championship, he completed the 3-6-3 in 2.70 seconds; 0.02 seconds faster than Emily Fox's record. The WSSA reviewed this video and determined it was a scratch, though slow-motion analysis shows that it was a clean run as seen by this video.
Yannick also performs Dice stacking, an activity in which the participant uses a cup to stack dice on end in different patterns, by use of inertia.