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Jason Day

b. 1979

Canadian martial artist

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About Jason Day

Born 1979. Jason Day is a Canadian mixed martial arts fighter and actor.

Jason Day (born March 18, 1979) is a Canadian former mixed martial artist. A professional from 2002 until 2011, he fought in the UFC, King of the Cage, the MFC, and the AFC. He is perhaps best remembered for his upset win in his UFC debut over veteran Alan Belcher.

Mixed martial arts career Early career Day made his professional debut in 2002 and fought on the regional circuit in Canada. After defeating UFC veteran David Loiseau via decision in 2008, Day was signed by the promotion.

Ultimate Fighting Championship Day made his UFC debut at UFC 83 on April 19, 2008 against Alan Belcher. Despite being an underdog against Belcher, Day won via first-round TKO.

Day then faced future UFC Middleweight Champion Michael Bisping at UFC 85. Day was defeated via first-round TKO. He was next scheduled to face Jason Lambert at UFC 88, but the bout was scrapped due to Day injuring his elbow and bicep.

Day returned at UFC 96 to face Ultimate Fighter Season 7 winner Kendall Grove. He was defeated again via first-round TKO, and was subsequently released from the promotion.

Regional circuit Upon being released from the UFC, Day returned to fight in the Canadian regional scene, going just 1-3 but losing to UFC veterans Jesse Taylor, Ovince St. Preux, and Francis Carmont.

On August 4, 2011, he was involved in a traffic accident while riding on his bike. Due to sustained injuries by the accident, Day could no longer compete in MMA. In 2014 the court ruled that the car driver was 90-percent at fault. The judgment awarded Day $375,000 in damages due to any potential lost earnings and emotional suffering that came with a premature end to his athletic career, from which he was granted $340,000 as the collision was ruled 10-percent his fault.

Political career On March 2, 2024, Day was nominated as the Conservative Party of British Columbia nominee for Columbia River-Revelstoke in the upcoming 2024 British Columbia general election. However, he ended his candidacy after social media posts emerged of Day accusing the World Health Organization of attempting to "achieve world government" by removing "from the minds of men, their individualism, loyalty to family traditions, national patriotism and religious dogmas", although Conservative Party Campaign Manager Angelo Isidorou claimed that Day left the race for personal reasons.

Championships and accomplishments Ultimate Fighting Championship UFC.com Awards 2008: Ranked #10 Upset of the Year

Mixed martial arts record Loss

Francis Carmont TKO (punches) Slammer In The Hammer

Hamilton, Ontario, Canada Loss

Ovince St. Preux KO (punches) EFC 5: Summer Rumble

Lloydminster, Canada Return to Light Heavyweight. Loss

Jesse Taylor Submission (rear-naked choke) AMMA 2: Vengeance

Edmonton, Alberta, Canada Win

Trevor Stewardson Submission (twister) Rumble in the Cage 35

Lethbridge, Alberta, Canada Loss

Kendall Grove TKO (punches and elbows) UFC 96

Columbus, Ohio, United States Loss

Michael Bisping TKO (punches) UFC 85

London, England Win

Alan Belcher TKO (punches) UFC 83

Montreal, Quebec, Canada Win

David Loiseau Decision (split) HCF: Destiny

Calgary, Alberta, Canada Win

Ron Faircloth TKO (punches) UCW 10: X-Factor

Winnipeg, Manitoba, Canada Win

Shawn Marchand TKO (punches) RITC 26: Rumble in the Cage 26

Alberta, Canada Win

Jonathan Goulet Submission (armbar) UCW 8: Natural Invasion

Manitoba, Canada Loss

Patrick Côté TKO (punches) TKO 29: Repercussion

Montreal, Quebec, Canada Win

Scott Arnold Submission (armbar) RITC 21: Seasons Beatings

Alberta, Canada Win

Ricardeau Francois Submission (guillotine choke) KOTC: Amplified

Alberta, Canada Win

Shawn Marchand TKO (punches) MFC: Unplugged 2

Alberta, Canada Win

Marcus Hicks Submission RITC 19: Rumble in the Cage 19

Alberta, Canada Win

Shane Lightle Submission (rear-naked choke) RITC 18: Rumble in the Cage 18

Alberta, Canada Loss

Victor Valimaki Submission (rear-naked choke) MFC 10: Unfinished Business

Canada Win

Linden Linklater TKO (punches) RITC 17: Rumble in the Cage 17

Alberta, Canada Win

Chris Fontaine TKO (punches) UCW 4: Ultimate Cage Wars 4

Manitoba, Canada Win

MJ Rooney TKO (punches) KOTC: Karnage

Alberta, Canada Win

Yoosef Penny Submission (rear-naked choke) MFC 9: No Excuses

Alberta, Canada Win

Greg Rogalsky Submission (guillotine choke) KOTC: Conquest

Alberta, Canada Middleweight debut. Loss

Krzysztof Soszynski TKO (punches) RR 11: Roadhouse Rumble 11

Alberta, Canada Loss

Ulysses Castro KO (punches) WFF 6: World Freestyle Fighting 6

Vancouver, British Columbia, Canada Loss

Cameron Brown Submission (rear-naked choke) Roadhouse Rumble 9

Canada Win

Krzysztof Soszynski Decision (unanimous) RR 8: Roadhouse Rumble 8

Alberta, Canada Loss

Derek Tisdale Submission (armbar) WFC: Western Freestyle Championships

Vernon, British Columbia, Canada Loss

Rodrigo Munduruca Submission (rear-naked choke) TIBF: Take it by Force

Manitoba, Canada Win

Jason Segal TKO (punches) RR 6: Roadhouse Rumble 6

Alberta, Canada Win

Jeremiah Cram Submission (guillotine choke) BTB: Border Town Brawl

Lloydminster, Canada

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Important facts

Birth century
Nationality
Also known as
Jason "Dooms" Day

People in Jason Day's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Jason Day's

Frequently asked questions

Who is Jason Day?

Canadian martial artist

When was Jason Day born?

Jason Day was born on 18 March 1979 in Lethbridge.

What is Jason Day's occupation?

Jason Day is a mixed martial arts fighter and actor.

What nationality is Jason Day?

Jason Day is Canadian.

Sources & further reading

· Wikipedia: Jason Day

· Wikidata: Q6162329

· DBpedia: Jason Day (fighter)

Cite this page

APA: Biography.guide. (2026). Jason Day. https://biography.guide/jason-day/

MLA: "Jason Day." Biography.guide, https://biography.guide/jason-day/.

Chicago: "Jason Day." Biography.guide. https://biography.guide/jason-day/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

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