- Birthday: 01/24/90
- Position: Flanker
- Height: 6'2"
- Weight: 240
- Club: Brigham Young Men's Rugby (USA)
- College: Brigham Young University
- High School: United Rugby
- Hometown: American Fork, UT
Sumsion began playing rugby during his senior year at United High School in Highland, Utah, in 2008. He served a mission in Buenos Aires, Argentina from 2009-11, which interrupted his rugby career at Brigham Young University following the school's first national championship. Upon his return to school, Sumsion helped BYU win two additional titles in 2012 and 2013.