2018 Outdoor: With the 4x400 relay team, ran a composite 3:27.06 at the Western Athletic Conference Outdoor Championships and placed seventh.
2017 Outdoor: At WAC Championships, finished 9th in the 400 prelims with a time of 49.77 ... At OSU High Performance, finished 4th in the 400 with a time of 48.91 ... At WAR X, finished 3rd with a time of 49.51 ... At Lewis & Clark Spring Break Open, finished 2nd in the 200 with a time of 22.41 and finished 2nd in the 400 with a time of 49.13.
2017 Indoor: At WAC Championships, finished 4th in the 400 with an indoor personal record time of 48.87 after qualifying for the finals with a previous personal record time of 49.31.
2016 Outdoor: Finished 2nd in the 200 at WAR IX with a time of 21.94 ... Finished 13th (and 1st in heat) in the 400 at Bryan Clay Invitational with a time of 48.45.
2015 Indoor: Finished 5th in distance medley at WAC Championships with a time of 10:27.55 ... Finished 14th in 4x400 meter relay at UW Indoor Preview with a time of 3:28.46
High School: Aguilar-Nelson was undefeated in the 400 meter dash during his senior year until he finished third at the Oregon state track and field championships, including victories at the Oregon Relays and the Laker Classic. A two-time track and field team MVP, he was also a two-year starter on the varsity football team as a wide receiver, leading the South Salem High School Saxons in receiving yards in 2014.
Personal: Aguilar-Nelson is the son of Steve Nelson and Lizi Aguilar-Nelson, and he has an older sibling named Zyanya. Born March 10, 1996, he is planning on majoring in business.