What is the fine-grained topic of the following text: Having fought in every RUFF event, Ayideng has amassed a 3-2 record with the promotion, but with his two losses coming against rival Irshaad Sayed and his inability to fight against training partner, and weight class leader, Jumabieke Tuerxun, Ayideng has decided to drop down a weight class to improve his chances for a berth in the 2013 RMB 1,000,000 Super Fight. Only return the topic.
Ayideng's decision to drop down a weight class in RUFF events.