Rex Tso
Rex Tso Sing-yu : 曹星如; born 15 July 1987) is a Hong Kong amateur boxer and former professional boxer. He has won several regional titles at super-flyweight and has been ranked in the world top 10 by the WBO.
However, after Rex Tso leaving his mother gym and returned to amateur boxing, his winning record decreased significantly. His amateur record is now 3 wins and 11 losses.
Professional career
Tso won the WBC Asia Continental Super Flyweight title in December 2012 in a bruising 12-round contest against Timur Shailezov of Kyrgyzstan, stopping his opponent in the 10th round.He then captured the WBO Asia-Pacific Junior Bantamweight title against Mako Matsuyama in February 2014, winning by TKO in the 8th round of the 10-round contest.
Tso then added the WBA International Super Flyweight title to his collection after defeating Michael Enriquez in March 2015.
On May 14, 2016, Tso faced Young Gil-bae. Tso made easy work out of the South Korean veteran, dominating the whole fight before stopping him in the fourth round.
He then captured the WBC Asia Super Flyweight title against Brad Hore in August 2015 and the WBO International Junior Bantamweight title against Ryuto Maekawa in October 2016.
On March 11, 2017, he successfully defended his WBO International and WBC Asian Boxing Council titles and claimed the WBO Asia-Pacific title against Hirofumi Mukai. Tso battered Mukai and dropped him twice before finishing him with a left to the body in the 8th round. With the win, Tso improved his record to 21-0.
In October 2017, Tso faced former WBA world champion Kohei Kono. Tso had sought to fight Kono while the latter a world champion, but was unable to draw him into the ring. After six rounds, Tso was unable to continue due to swelling around his eye. Nevertheless, Tso remained unbeaten by winning a technical decision.
Thrilla in Manila II Countdown
October 26, 2025, In an early boxing event dedicated as the 50th Year Anniversary of the historic Thrilla in Manila between Muhammad Ali and Joe Frazier. Co-featured bout, Rex Tso will face India's Sagar Chouhan for the ten-round bout in what will be Tso's second fight since ending an eight-year sabbatical from the pro ranks earlier this year at the San Andres Sports Complex in Manila.Professional boxing record
| No. | Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
| 24 | Draw | Sagar Chouchan | TD | 2, 2:49 | Oct 26, 2025 | San Andres Sports Complex, Manila, Philippines | For vacant IBF Pan Pacific bantamweight title; TD: Chouhan unable to continue due to severe cut | |
| 23 | Win | 23–0 | Vergilio Silvano | KO | 5, 0:42 | Aug 24, 2025 | The Flash Grand Ballroom of the Elorde Sports Complex, Paranaque City, Philippines | |
| 22 | Win | 22–0 | Kohei Kono | 7 | Oct 7, 2017 | Convention and Exhibition Centre, Wan Chai, Hong Kong | Retained WBO International super-flyweight title; Unanimous TD after Tso sustained swelling from an accidental head clash | |
| 21 | Win | 21–0 | Hirofumi Mukai | KO | 8, 0:37 | Mar 11, 2017 | Convention and Exhibition Centre, Wan Chai, Hong Kong | Retained WBC–ABCO and WBO International super-flyweight titles; Won WBO Asia Pacific super-flyweight title |
| 20 | Win | 20–0 | Ryuto Maekawa | UD | 10 | Oct 8, 2016 | Convention and Exhibition Centre, Wan Chai, Hong Kong | Retained WBC–ABCO super-flyweight title; Won vacant WBO International super-flyweight title |
| 19 | Win | 19–0 | Young Gil-bae | TKO | 4, 2:57 | May 14, 2016 | Convention and Exhibition Centre, Wan Chai, Hong Kong | Retained WBC–ABCO super-flyweight title; Won vacant WBO Asia Pacific super-flyweight title |
| 18 | Win | 18–0 | Bradley Hore | TKO | 7, 2:57 | Aug 29, 2015 | Convention and Exhibition Centre, Wan Chai, Hong Kong | Won vacant WBC–ABCO super-flyweight title |
| 17 | Win | 17–0 | Phum Kunmat | TKO | 4, 2:55 | Jul 18, 2015 | Cotai Arena, Macau, SAR | |
| 16 | Win | 16–0 | Michael Enriquez | UD | 10 | Mar 7, 2015 | Cotai Arena, Macau, SAR | Won vacant WBA International super-flyweight title |
| 15 | Win | 15–0 | Espinos Sabu | UD | 8 | Nov 23, 2014 | Cotai Arena, Macau, SAR | |
| 14 | Win | 14–0 | John Bajawa | TKO | 5, 0:48 | Jul 19, 2014 | Cotai Arena, Macau, SAR | |
| 13 | Win | 13–0 | Nattaphong Panpaew | UD | 10 | May 31, 2014 | Cotai Arena, Macau, SAR | Retained WBO Asia Pacific super-flyweight title |
| 12 | Win | 12–0 | Mako Matsuyama | TKO | 8, 1:27 | Feb 22, 2014 | Cotai Arena, Macau, SAR | Retained WBC–ABCO Continental super-flyweight title; Won vacant WBO Asia Pacific super-flyweight title |
| 11 | Win | 11–0 | Chaloemchai Khrithammarat | TKO | 1, 2:29 | Nov 24, 2013 | Cotai Arena, Macau, SAR | |
| 10 | Win | 10–0 | Rusalee Samor | 6 | Jul 27, 2013 | Cotai Arena, Macau, SAR | ||
| 9 | Win | 9–0 | Wandee Singwancha | TKO | 4, 1:04 | May 28, 2013 | Convention and Exhibition Centre, Wan Chai, Hong Kong | Retained WBC–ABCO Continental super-flyweight title |
| 8 | Win | 8–0 | Timur Shailezov | 10, 3:00 | Dec 11, 2012 | Convention and Exhibition Centre, Wan Chai, Hong Kong | Won vacant WBC–ABCO Continental super-flyweight title | |
| 7 | Win | 7–0 | Manot Comput | UD | 4 | May 5, 2012 | Marina Bay Sands Hotel, Singapore | |
| 6 | Win | 6–0 | Torsak Singabasak | TKO | 1, 1:55 | Apr 26, 2012 | Kowloonbay International Trade & Exhibition Centre, Kowloon, Hong Kong | |
| 5 | Win | 5–0 | Aldrin Janer | TKO | 4, 0:34 | Feb 19, 2012 | Balibago Gym, Santa Rosa, Philippines | |
| 4 | Win | 4–0 | Mabert Paulino | UD | 4 | Jan 28, 2012 | Recom Dome, Caloocan, Philippines | |
| 3 | Win | 3–0 | Jeffrey Pajaroja | 2, 1:52 | Dec 14, 2011 | Brusmick Compound Gym, Santa Rosa, Philippines | ||
| 2 | Win | 2–0 | Unknown | 1, 1:09 | Oct 25, 2011 | Yiliang, People's Republic of China | ||
| 1 | Win | 1–0 | Xian Qian Wei | 4 | Sep 12, 2011 | Kowloonbay International Trade & Exhibition Centre, Kowloon, Hong Kong | Professional debut |