Marcin Siwy

4-1-0 2 KO · 2016–2025

Updated · Sources: English Wikipedia, Wikipedia (ru)

Marcin Siwy is a professional boxer. Record 4-1-0 with 2 knockouts over 2016–2025. Marcin Siwy last fought Damian Knyba on Jun 21, 2025 and lost by RTD in round 8 of 10.

Born—
Country—
DebutNov 5, 2016
Career2016–2025
Rounds boxed27
KO share50%
Boxerbook rating1897 ± 190 · inactive since Jun 2025Why here ›
Confirmed bouts0 of 5

Record and next fight

Record
4-1-0, 2 KOs · 2016–2025
Next fight
No next fight confirmed

Last result

L
Damian Knyba 🇵🇱
RTD 8/10 · Prudential Center, Newark, 🇺🇸
2025-06-21 ›
✓ one source

The record

5 bouts, 2016–2025, newest first. Records under each bout are both boxers going in.

Record compiled by Boxerbook from fight records

Bouts by source: English Wikipedia · 5, Wikipedia (ru) · 1

L
Damian Knyba 🇵🇱
RTD 8/10 · Prudential Center, Newark, 🇺🇸
Siwy 4-0-0 · Knyba 15-0-0
2025-06-21 ›
✓ one source
W
Rydell Booker 🇺🇸
UD 8/8 · Arena Bedzin, ul. Sportowa 20, 🇵🇱
Siwy 3-0-0 · Booker 26-4-2
2022-03-26 ›
✓ one source
W
Marcelo Luiz Nascimento 🇧🇷
KO 1/8 · Dwor Artusa, Toruń, 🇵🇱
Siwy 2-0-0 · Nascimento 18-20-0
2021-11-21 ›
✓ one source
W
Oleksiy Mazikin 🇺🇦
KO 4/6 · Hala widowiskowo-sportowa, Jelenia Góra, 🇵🇱
Siwy 1-0-0 · Mazikin 14-14-2
2019-05-25 ›
✓ one source
W
Michael Sprott 🇬🇧
UD 6/6 · Hala ICDS, ul. Staszica 2, 🇵🇱
Siwy 0-0-0 · Sprott 45-27-0
2016-11-05 ›
✓ one source

Ratings now

Not in any current ranking.

World titles

No world title reigns recorded.

Facts

What is Marcin Siwy's record?
Marcin Siwy's professional record is 4-1-0 with 2 knockouts.
When is Marcin Siwy's next fight?
No next fight is confirmed as of 22 Oct 2026.
Who did Marcin Siwy fight last?
Marcin Siwy last fought Damian Knyba on Jun 21, 2025 and lost by RTD in round 8 of 10.

Sources

Boxerbook ID 21571 · permanent link boxerbook.com/id/21571. Sources: fight records collected by Boxerbook (commissions, official results, press, bookmakers' cards). Spot a mistake? Every bout page has a link to report it.

No external links.