Akeem Sirleaf qualified for Team Liberia a long time ago, even before the pandemic postponed the 2020 Olympics. He is a standout 200m and 400m runner who holds the Liberian National Records in both events. His personal bests of 20.37 in the 200m and 45.42 are both good times, but he ran both those personal bests back in the 2019 season which is how he qualified for the Olympics in the first place.
Sirleaf was recently a part of North Carolina A&Ts National Championship 4x400m relay with Trevor Stewart, Daniel Stokes, and Randolph Ross Jr.
Currently, Sirleaf has 2021 Outdoor PRs of 20.62 in the 200m and 46.54 in the 400m. That currently places him 142nd in the 200m and 331st in the 400m in the world this year. Those times are a bit off from his personal bests of 20.37 in the 200m and 45.42 in the 400m.
To qualify for the 400m semifinals in 2016 you had to place top three in your heat or have one of the next three fastest qualifying times. That would put the range of times for the semifinals at 45.36 to 45.91. That is well within the ability of Sirleaf though it will come down to what heat he is in and who is competing against.
In the 200m, Sirleaf's personal best of 20.37 would rank him 56th in the world right now. If he happens to run in a slower heat or if he sets a new PR, he could make it to the semifinals for the 200m. in 2016 the slowest quarterfinal time to make it was 20.58, but most qualifying times were 20.30 and below.