Nelson was selected in the first round (10thoverall) of the 2019 MLS SuperDraft.
Nelson played two seasons with North Carolina starting in 41 matches for the Tar Heels. He was named to the 2017 All-ACC Freshman team and named to the second-team All-ACC member during his sophomore year. The Ohio-native is a Generations Adidas player.
Nelson has been called up to U.S. youth national teams and competed in the 2015 FIFA U-17 World Cup in Chile.