William Rentz

"Iron Will"

8-3-0

United StatesLast 5

Amateur MMA 5-0

Last fight: Loss vs Luis Francischinelli · TKO · Oct 13, 2026

LAST FIGHT

LOSSvs Luis FrancischinelliTKO · R1 02:20

UFCDana White's Contender Series 96·October 13, 2026

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William Rentz holds a professional MMA record of 8-3-0. Rentz has won 8 fights: 8 by KO/TKO, 0 by submission, 0 by decision. Of 3 career losses, 2 came by KO/TKO and 0 by submission. Most recent fight: October 13, 2026. Tracked organizations: UFC.

Profile

Height: 6'0"183 cm
Weight: 170 lbs77 kg
Reach: 71"180 cm
Stance: Orthodox
DOB: Mar 19, 1999
Age: 27
Nationality: United States
Birthplace: Honolulu, Hawaii

Latest on William Rentz

Career history

LOSS
vs Luis Francischinelli
UFC · Dana White's Contender Series 96· Oct 13, 2026· Welterweight· 8-3 vs 7-1
TKO
R1 · 02:20
WIN
vs Nick McCarty
Combat Night Tampa· Jun 20, 2026· Welterweight· 8-2 vs 7-3-1
TKO
R1 · 0:25
WIN
vs Wesley Golden
Combat Night Jacksonville· May 2, 2026· Welterweight· 7-2 vs 9-28
TKO
R1 · 1:12
WIN
vs Tyler Smith
Combat Quest Pro 7· Jan 31, 2026· Catchweight· 6-2 vs 1-8
TKO
R1 · 2:16
WIN
vs Shane Mistretta
CFFC 141: Schoenfelder vs. Guarascio· Apr 19, 2025· Lightweight· 5-2 vs 3-2
TKO
R2 · 4:30
WIN
vs Gabriel Morales
CFFC 133: Watley vs. Forest· Jul 26, 2024· Lightweight· 4-2 vs 4-5
TKO
R2 · 3:51
LOSS
vs Christopher Alvidrez
CFFC 126: Alvidrez vs. Rentz· Oct 13, 2023· Catchweight· 3-2 vs 3-1
TKO
R1 · 4:42
WIN
vs Feraris Golden Jr.
CFFC 122: Gunnison vs. Watley· Jul 20, 2023· Lightweight· 3-1 vs 3-5
TKO
R1 · 3:49
WIN
vs Tyler Keating
CFFC 119: Beard vs. Ellis· Apr 20, 2023· Lightweight· 2-1 vs 1-2
TKO
R1 · 2:35
LOSS
vs Frank Wells
CFFC 104: Torres vs. Bilder· Dec 17, 2021· Lightweight· 1-1 vs 2-1
UD
WIN
vs Quintin Bray
CFFC 100: Kamchybekov vs. Smith· Sep 16, 2021· Lightweight· 1-0 vs 0-2
TKO
R2 · 2:48

Background

Credentials, amateur pedigree and camp

BaseMMA

Started in MMA

Camp

Gracie PAC · Tampa, Florida, United States Instructor
Gracie Tampa South · Tampa, Florida, United States

Coaches

Billy Quarantillo · Head coach
Matt Arroyo · Grappling coach

Training partners

Billy Quarantillo
Ali Abouzalam
Tommy Laipply
Rueben Beard

Career stats

Pro MMARecord: 8-3-0 · Source: UFCalendar

Striking

Strikes landed1.29per min

43% accuracy

Strikes absorbed6.86per min

30% avoided

Grappling

Takedowns landed6.43per 15 min

25% success

Takedowns stuffed0%

Submission attempts0.0per 15 min

UFCalendar Power Index rating

Current: 1619▼29
Peak: 1648Jun 20, 2026
Rated fights: 11

See the full Power Index →

Frequently asked questions

When does William Rentz fight next?

William Rentz has no confirmed upcoming fight.

What is William Rentz's record?

William Rentz's professional MMA record is 8-3-0.

Who is William Rentz fighting next?

William Rentz's next opponent has not been announced.

Who did William Rentz fight last?

William Rentz most recently fought Luis Francischinelli at Dana White's Contender Series 96 on Tuesday, October 13, 2026, LOSS (TKO).

What weight class does William Rentz fight in?

William Rentz fights at Welterweight.

How many knockouts does William Rentz have?

William Rentz has 8 wins by KO/TKO and 0 wins by submission.

How tall is William Rentz?

William Rentz is 6'0" (183 cm) tall.

How much does William Rentz weigh?

William Rentz weighs 170 lbs (77 kg).

What is William Rentz's reach?

William Rentz has a reach of 71" (180 cm).

How old is William Rentz?

William Rentz is 27 years old (born Mar 19, 1999).

Where is William Rentz from?

William Rentz is from the United States.

Get William Rentz's fight history and stats as JSON with the MMA Fight Data API →

CAREER SUMMARY