Baby Nansen
Birthony Katarina Nansen, better known as Baby Nansen, is a New Zealand professional boxer and a retired kickboxer. Nansen's biggest fight of her career was against Melissa St. Vil for the vacant WBC Silver female super featherweight title on the Kali Reis vs. Maricela Cornejo undercard. Despite losing the bout, she fought very well and received a WBC ranking of 39th. Nansen has fought on a King in the Ring undercard.
Vs Jennings
In 2016, Nansen was appointed as the number one contender for the New Zealand National Super Featherweight Title, which was then held by Rebecca Jennings. The two fought each other in May 2017 for the NZPBA title with the winner originally being Nansen by Split Decision. Shortly after the bout, Nansen's camp were approached by the officiating supervisor and it was revealed the scorecard calculations were added up incorrectly. Nansen was stripped of the title immediately and the result was changed to a draw from the right calculations.Combat titles won
Kickboxing titles
- WMC New Zealand Featherweight Title
- ISKA South Pacific Featherweight Title
- WMC New Zealand Amateur Lightweight Title
- WMC New Zealand Amateur Featherweight Title
- WMC New Zealand Junior Amateur Lightweight Title
Boxing
- New Zealand National Super Lightweight Title
Professional boxing record
| No. | Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
| 13 | Win | 8–4–1 |  Tania Reid | 4 | 25 May 2019 | TSB Stadium, New Plymouth, New Zealand | 3541 attendance record | |
| 12 | Lose | 7–4–1 |  Deanha Hobbs | 8 | 15 December 2018 | Convention & Exhibition Centre, Brisbane, Queensland, Australia | vacant WBO Asia Pacific Female super featherweight title | |
| 11 | Win | 7–3–1 | Quinita Hati | 4 | 18 August 2018 | Kerikeri, New Zealand | ||
| 10 | Lose | 6–3–1 |  Mikaela Mayer | 6 | 12 May 2018 | Madison Square Garden, New York, USA | ||
| 9 | Win | 6–2–1 | Quinita Hati | 8 | 1 September 2017 | AMI Netball Centre, St Johns, Auckland, New Zealand | vacant PBCNZ female super lightweight title | |
| 8 | Draw | 5–2–1 | Rebecca Jennings | 10 | 20 May 2017 | Te Rauparaha Arena, Porirua, New Zealand | NZPBA female super featherweight title | |
| 7 | Win | 5–2 | Wendy Talbot | 4 | 12 November 2016 | AMI Netball Centre, St Johns, Auckland, New Zealand | ||
| 6 | Win | 4–2 | Briar Johnston | 4 | 28 October 2016 | ASB Stadium, Kohimarama, Auckland, New Zealand | ||
| 5 | Win | 3–2 |  Daria Smith | 4 | 8 October 2016 | Manurewa Netball Centre, Manurewa, New Zealand | ||
| 4 | Lose | 2–2 |  Melissa St. Vil | 10 | 16 April 2016 | The Trusts Arena, Auckland, New Zealand | Vacant WBC Silver female super featherweight title | |
| 3 | Win | 2–1 | Daria Smith | 4 | 5 September 2015 | ABA Stadium, Auckland, New Zealand | World Boxing Federation World Title Eliminator | |
| 2 | Lose | 1–1 | Gentiane Lupi | 6 | 28 February 2015 | Te Rauparaha Arena, Porirua, New Zealand | ||
| 1 | Win | 1–0 | Suzie Ketchley | 4 | 18 October 2014 | AMI Netball North Harbour Stadium, Northcote, New Zealand | Professional debut |
Awards and recognitions
- 2019 Gladrap Boxing Awards Female boxer of the year '
- 2019 Gladrap Boxing Awards Best looking female boxer of the year '