| 1 | Raul Rosas Jr. | 18 | Jay Perrin | UFC 282: Blachowicz vs. Ankalaev (December 10, 2022) |
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| 2 | Sage Northcutt | 19 | Francisco Trevino | UFC 192: Cormier vs Gustafsson (October 3, 2015) |
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| 3 | Vitor Belfort | 19 | Scott Ferrozzo | UFC 12: Judgement Day (February 7, 1997) |
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| 4 | Jake Matthews | 19 | Dashon Johnson | UFC Fight Night: Te Huna vs Marquardt (June 28, 2014) |
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| 5 | Song Yadong | 19 | Bharat Kandare | UFC Fight Night: Bisping vs. Gastelum (November 25, 2017) |
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| 6 | Naoki Inoue | 20 | Carls John De Tomas | UFC Fight Night: Holm vs. Correia (June 17, 2017) |
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| 7 | Robbie Lawler | 20 | Aaron Riley | UFC 37: High Impact (May 10, 2002) |
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| 8 | Nick Diaz | 20 | Jeremy Jackson | UFC 44: Undisputed (September 26, 2003) |
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| 9 | Michael McDonald | 20 | Edwin Figueroa | UFC Fight Night: Nogueira vs Davis (March 26, 2011) |
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| 10 | Sergio Pettis | 20 | Will Campuzano | UFC 167: St-Pierre vs Hendricks (November 16, 2013) |
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| 11 | Chase Hooper | 20 | Daniel Teymur | UFC 245: Usman vs. Covington (December 14, 2019) |
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| 12 | Alice Pereira | 20 | Hailey Cowan | UFC Fight Night: Moicano vs. Duncan (April 4, 2026) |
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| 13 | Rory MacDonald | 20 | Mike Guymon | UFC Fight Night: Maynard vs Diaz (January 11, 2010) |
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| 14 | Maycee Barber | 20 | Hannah Cifers | UFC Fight Night: Korean Zombie vs. Rodriguez (November 10, 2018) |
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| 15 | Max Holloway | 20 | Pat Schilling | The Ultimate Fighter: Live Finale (June 1, 2012) |
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| 16 | Tamdan McCrory | 20 | Pete Spratt | UFC Fight Night: Stout vs Fisher (June 12, 2007) |
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| 17 | Paige VanZant | 20 | Kailin Curran | UFC Fight Night: Edgar vs Swanson (November 22, 2014) |
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| 18 | Dustin Hazelett | 20 | Diego Saraiva | UFC 67: All or Nothing (February 3, 2007) |
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| 19 | Charles Oliveira | 20 | Darren Elkins | UFC Live: Jones vs Matyushenko (August 1, 2010) |
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| 20 | Kay Hansen | 20 | Jinh Yu Frey | UFC Fight Night: Poirier vs. Hooker (June 27, 2020) |
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| 21 | Ray Borg | 20 | Shane Howell | UFC Fight Night: Swanson vs Stephens (June 28, 2014) |
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| 22 | Edmen Shahbazyan | 21 | Darren Stewart | The Ultimate Fighter: Heavy Hitters Finale (November 30, 2018) |
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| 23 | Jon Jones | 21 | Andre Gusmao | UFC 87: Seek And Destroy (August 9, 2008) |
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| 24 | Karo Parisyan | 21 | Dave Strasser | UFC 44: Undisputed (September 26, 2003) |
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| 25 | Francisco Prado | 21 | Ottman Azaitar | UFC Fight Night: Holm vs. Bueno Silva (July 15, 2023) |
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| 26 | Santiago Luna | 21 | Quang Le | Noche UFC: Lopes vs. Silva (September 13, 2025) |
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| 27 | Terry Etim | 21 | Matt Grice | UFC 70: Nations Collide (April 21, 2007) |
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| 28 | Iasmin Lucindo | 21 | Brogan Walker | UFC Fight Night: Pavlovich vs. Blaydes (April 22, 2023) |
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| 29 | Stefan Struve | 21 | Denis Stojnic | UFC 99: The Comeback (June 13, 2009) |
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| 30 | Jeremy Stephens | 21 | Diego Saraiva | UFC 76: Knockout (September 22, 2007) |
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| 31 | Cory McKenna | 21 | Kay Hansen | UFC Fight Night: Felder vs. Dos Anjos (November 14, 2020) |
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| 32 | Arnold Allen | 21 | Alan Omer | UFC Fight Night: Jedrzejczyk vs Penne (June 20, 2015) |
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| 33 | Kelvin Gastelum | 21 | Uriah Hall | The Ultimate Fighter: Team Jones vs. Team Sonnen Finale (April 13, 2013) |
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| 34 | John Hathaway | 21 | Tom Egan | UFC 93: Franklin vs Henderson (January 17, 2009) |
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| 35 | Ricardo Ramos | 21 | Michinori Tanaka | UFC Fight Night: Bermudez vs. The Korean Zombie (February 4, 2017) |
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| 36 | Rongzhu | 21 | Brandon Jenkins | UFC Fight Night: Smith vs. Spann (September 18, 2021) |
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| 37 | Tereza Bleda | 21 | Gabriella Fernandes | UFC Fight Night: Vettori vs. Cannonier (June 17, 2023) |
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| 38 | Justin Scoggins | 21 | Richie Vaculik | UFC Fight Night: Hunt vs Bigfoot (December 6, 2013) |
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| 39 | Muhammad Mokaev | 21 | Cody Durden | UFC Fight Night: Volkov vs. Aspinall (March 19, 2022) |
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| 40 | Joshua Van | 21 | Zhalgas Zhumagulov | UFC Fight Night: Emmett vs. Topuria (June 24, 2023) |
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| 41 | Carlos Newton | 21 | Bob Gilstrap | UFC 17: Redemption (May 15, 1998) |
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| 42 | Clay Collard | 21 | Alex White | UFC 181: Hendricks vs Lawler II (December 6, 2014) |
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| 43 | Andrei Arlovski | 21 | Aaron Brink | UFC 28: High Stakes (November 17, 2000) |
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| 44 | Logan Clark | 21 | Steve Byrnes | UFC Fight Night: Sanchez vs Riggs (December 13, 2006) |
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| 45 | Kevin Lee | 21 | Jesse Ronson | The Ultimate Fighter: Team Edgar vs. Team Penn Finale (July 6, 2014) |
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| 46 | Sam Stout | 21 | Spencer Fisher | UFC 58: USA vs Canada (March 4, 2006) |
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| 47 | Nikita Krylov | 21 | Walt Harris | UFC on FOX: Henderson vs Thomson (January 25, 2014) |
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| 48 | Jake O'Brien | 21 | Kristof Midoux | UFC Fight Night 6 (August 17, 2006) |
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| 49 | Joe Riggs | 21 | Joe Doerksen | UFC 49: Unfinished Business (August 21, 2004) |
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| 50 | Dustin Poirier | 21 | Josh Grispi | UFC 125: Resolution (January 1, 2011) |
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