Ratings
2019-07-13: Hong Kong WOC Qualify Tournament(Hong-Kong)
| HON Otto | 32-32 | MA Derek |
| MADRONA Mario | 36-28 | HON Otto |
| HON Otto | 04-60 | CHOW Ka Ming |
| TSOI Chun Yip | 53-11 | HON Otto |
| HON Otto | 21-43 | WEN Zeshun |
| IP Wai Sing | 39-25 | HON Otto |
| HON Otto | 27-37 | LEE Chun Kui |
| YANG Kelvin | 42-22 | HON Otto |
| TAN Wai Kuen Johnny | 45-19 | HON Otto |
| HON Otto | 04-60 | DONG Zhen |
| WONG Chi Wah | 42-22 | HON Otto |
| HON Otto | 17-47 | LAM Maverick |
| HON Otto | 15-49 | FU Velma |
2018-07-22: Hong Kong Rookie 2018(Hong-Kong)
2018-06-02: 2018 Hong Kong Othello Championships(Hong-Kong)
| HON Otto | 49-15 | CHAN Ching Lin |
| LAU Tsz Kin | 12-52 | HON Otto |
| HON Otto | 38-26 | HUI Chun Kit |
| HON Otto | 22-42 | IP Wai Sing |
| MA Wing Yin | 49-15 | HON Otto |
| HON Otto | 49-15 | YU Charlie Hp |
| HON Otto | 23-41 | CHOW Ka Ming |
| MA Derek | 39-25 | HON Otto |
| SUNG Matthew | 20-44 | HON Otto |
| HON Otto | 51-13 | LAM Ching Yu Sandra |
| DONG Zhen | 46-18 | HON Otto |
| HON Otto | 45-19 | LI Hao Long |
| CHOW Tsun Hong | 33-31 | HON Otto |
2017-07-16: Hong Kong Othello Championship 2017(Hong-Kong)
| LI Chun Wan | 55-09 | HON Otto |
| WONG Ka Ho | 41-23 | HON Otto |
| HON Otto | 53-11 | MAK Weng Fat |
| HON Otto | 25-39 | YANG Kelvin |
| MAK Wai Tung | 47-17 | HON Otto |
| HON Otto | 27-37 | TSOI Chun Yip |