Ultimate Fighting Calendar

MMA Judges

Dr. Greg Jackson

Active Dec 10, 2011, Apr 18, 2026

Dr. Greg Jackson has judged 18 MMA fights (54 rounds) since 2011. They score a 10-8 round 0% of the time (pool average 3.4%), land in split decisions in 5.6% of their three-judge fights, and have been the lone dissenting card once. Their winner matches the media consensus in 100% of compared fights.

Fights scored
18
Rounds scored
54
10-8 rounds
0%
avg 3.4%
Split decisions
5.6%
avg 18.9%
Lone cards
1 (5.6%)
avg 6.1%
Media agreement
100%
avg 86.9%

Most disputed cards

The fights where this judge's card clashed hardest with colleagues, media or fans.

  1. Dec 11, 2016Valerie Letourneau vs Viviane PereiraUFC 206: Holloway vs PettisLone card29-28for Valerie Letourneau
  2. Jul 28, 2018Alexander Hernandez vs Olivier Aubin-MercierUFC Fight Night: Alvarez vs Poirier 230-27for Alexander Hernandez
  3. Apr 18, 2026Melissa Croden vs Daria ZhelezniakovaUFC Fight Night: Burns vs Malott29-28for Melissa Croden

Scorecard history

  1. Apr 18, 2026Melissa Croden vs Daria ZhelezniakovaUFC Fight Night: Burns vs Malott29-28for Melissa Croden
  2. Dec 9, 2018Claudia Gadelha vs Nina NunesUFC 231: Holloway vs Ortega-
  3. Dec 9, 2018Katlyn Cerminara vs Jessica EyeUFC 231: Holloway vs Ortega-
  4. Jul 28, 2018Alexander Hernandez vs Olivier Aubin-MercierUFC Fight Night: Alvarez vs Poirier 230-27for Alexander Hernandez
  5. Jul 28, 2018Jordan Mein vs Alex MoronoUFC Fight Night: Alvarez vs Poirier 229-28for Jordan Mein
  6. Jul 28, 2018John Makdessi vs Ross PearsonUFC Fight Night: Alvarez vs Poirier 229-28for John Makdessi
  7. Dec 17, 2017John Makdessi vs Abel TrujilloUFC Fight Night: Lawler vs Dos Anjos30-27for John Makdessi
  8. Dec 17, 2017Jordan Mein vs Erick SilvaUFC Fight Night: Lawler vs Dos Anjos-
  9. Dec 11, 2016Valerie Letourneau vs Viviane PereiraUFC 206: Holloway vs PettisLone card29-28for Valerie Letourneau
  10. Dec 11, 2016Mitch Gagnon vs Matthew LopezUFC 206: Holloway vs Pettis-
  11. Aug 23, 2015Neil Magny vs Erick SilvaUFC Fight Night: Holloway vs Oliveira-
  12. Aug 23, 2015Maryna Moroz vs Valerie LetourneauUFC Fight Night: Holloway vs Oliveira-
  13. Aug 23, 2015Chris Kelades vs Chris BealUFC Fight Night: Holloway vs Oliveira-
  14. Jun 15, 2013Rashad Evans vs Dan HendersonUFC 161: Evans vs Henderson-
  15. Jun 15, 2013Mitch Clarke vs John MaguireUFC 161: Evans vs Henderson-
  16. Jun 15, 2013Yves Jabouin vs Dustin PagueUFC 161: Evans vs Henderson-
  17. Dec 10, 2011Walel Watson vs Yves JabouinUFC 140: Jones vs Machida-
  18. Dec 10, 2011Mark Bocek vs Nik LentzUFC 140: Jones vs Machida30-27for Mark Bocek