| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As |  | 
| 2012 Summer Olympics | Table Tennis |  IRI |  |  |  | Hamid Reza Sabbaghian |  | 
|  | Singles, Women
(Olympic) |  | Round Two | Chen Szu-Yu — Krisztina Tóth | Umpire |  |  | 
|  | Singles, Women
(Olympic) |  | Round One | Sara Ramírez — Ankita Das | Umpire |  |  | 
|  | Singles, Men
(Olympic) |  | Semi-finals | Wang Hao — Chuang Chih-Yuan | Umpire |  |  | 
|  | Singles, Men
(Olympic) |  | Quarter-finals | Wang Hao — Seiya Kishikawa | Umpire |  |  | 
|  | Singles, Men
(Olympic) |  | Round Three | Jiang Tianyi — Aleksey Smirnov | Umpire |  |  | 
|  | Singles, Men
(Olympic) |  | Round Three | Chuang Chih-Yuan — Dániel Zwickl | Umpire |  |  | 
|  | Singles, Men
(Olympic) |  | Round Two | Aleksey Smirnov — Matīss Burģis | Umpire |  |  | 
|  | Singles, Men
(Olympic) |  | Round Two | Marcos Freitas — Luis Lin | Umpire |  |  | 
|  | Singles, Men
(Olympic) |  | Round One | Zengyi Wang — Hugo Hoyama | Umpire |  |  | 
|  | Singles, Men
(Olympic) |  | Preliminary Round | Kim Song-Nam — Timothy Wang | Umpire |  |  | 
|  | Team, Men
(Olympic) |  | Quarter-finals | Hong Kong, China — Japan | Umpire |  |  | 
|  | Team, Men
(Olympic) |  | Round One | Austria — Egypt | Umpire |  |  |