Mattison Thetford was born on April 12, 2004 in Oklahoma to Brandon and Brandy Thetford. She has a sister, Makenzie and a Miniature Schnauzer named Pinkerbelle. Currently, Mattison is a student at Moore High School. She earned numerous school awards include:
Academic Performance 4.0 and Above GPA Award
President’s Education Award for Outstanding Academic Excellence
Award for 8th Grade Pre-AP English
Oklahoma Junior High School Honor Society Award
Mattison started taking gymnastics classes for fun when she was two years old at Bart Conner Gymnastics Academy in Norman, OK and has been there ever since! She started competing level 4 in 2013 where she placed fifth on uneven bars at the State Championships. At the 2014 Level 4 State Championships, she placed second on vault and fifth on balance beam. Mattison moved up to level 5 for the 2015 season, finishing first in the all-around and first on vault, uneven bars and floor exercise.
In 2016, Mattison skipped level 6 and moved up to level 7. She finished fifth in the all-around, second on uneven bars and fourth on floor exercise at the State Championships. As a level 8 gymnast in 2017, she placed sixth on balance beam and seventh on vault and uneven bars at the State Championships. She qualified to the Region 3 Championships, finishing sixth on uneven bars with a 9.575. As a first-year level 9 gymnast in 2018, Mattison placed fifth on vault and sixth on uneven bars and balance beam at the State Championships. She qualified to the Level 9 Western Nationals in Salt Lake City, UT after finishing 13th overall at the Region 3 Championships. In 2019, Mattison placed second on uneven bars at the Region 3 Championships. She qualified to the Level 9 Western Nationals in Boise, ID, finishing fifth in the all-around and sixth on balance beam.
As a first-year level 10 gymnast, Mattison qualified to the State Championships but was unable to compete due to COVID-19 pandemic.
Mattison trains 22 hours per week at Bart Conner Gymnastics Academy in Norman, OK under coach Christian Ivanov. Her long-term goal is to compete for a college gymnastics team.