He attended Bishop Gorman High School in Summerlin, Nevada, a suburb of Las Vegas.
[3] Blackmon finished his collegiate soccer career as the Tigers' all-time goal scoring leader, until Camden Riley broke his record one year later.
Blackmon played for Premier Development League sides Orange County SC U-23 and Burlingame Dragons.
[7] On May 24, 2019, at Banc of California Stadium, in a 4–2 win over the Montreal Impact, Blackmon scored his first professional goal on a header in the fifty-fifth minute.
[9][10] On July 26, 2022, Blackmon scored the winning penalty kick against Toronto FC in the Canadian Championship Final.