He was rated as a four-star prospect by ESPN.com, Rivals.com, and Scout.com, and was ranked by ESPN as the No. 3 tight end in college football's incoming Class of 2016 and the No. 44 overall player in the 2016 ESPN 300.[5]
On September 24, 2016, Asiasi scored his first college touchdown in a victory over Penn State.[11] He finished the season with two catches for 18 yards and one touchdown.
Following his freshman season, Asiasi transferred to UCLA. He transferred to be closer to his home in San Mateo, California.[12]
UCLA
After sitting out the 2017 season due to transfer rules, Asiasi made his debut for the Bruins in 2018.[13] He finished the season with six receptions for 130 yards and one touchdown.
He saw a much greater role in 2019, playing in 12 games and netting 44 receptions for 641 yards and 4 touchdowns. He had 141 yards against USC, his first 100-yard game.[13]
Asiasi was selected in the third round of the 2020 NFL draft by the New England Patriots with the 91st overall pick.[17] He was placed on injured reserve on November 3, 2020.[18] Asiasi was activated off of injured reserve on December 10.[19] During the Patriots' Week 17 game against the New York Jets on January 3, 2021, Asiasi recorded the first two receptions of his career and his first receiving touchdown during the 28–14 win.[20]
On August 30, 2022, Asiasi was waived by the Patriots.[21]
Cincinnati Bengals
On August 31, 2022, Asiasi was claimed off waivers by the Cincinnati Bengals.[22] Asiasi was waived by the Bengals on August 29, 2023 as part of their 53-man roster cutdown.[23]
On December 26, 2023, Asiasi was signed to the Tennessee Titans practice squad.[26] He was not signed to a reserve/future contract and thus became a free agent when his contract expired at the end of the season.[27]