[4] He was previously ranked as a top ten light heavyweight by Beyond Kickboxing between October 2022 and November 2023.
[13] Boutaleb retired from the bout at the end of the first round, after being dropped with an uppercut, which the referee failed to call.
[15] Achterberg was next booked to face Cedric Lushima, a mixed martial artist, at Ultimate Sparta Championship on April 13, 2019.
[17] He won the fight by second-round knockout, flooring Heerschlag with a head kick which left him unable to rise from the canvas.
Achterberg won the quarterfinals bout of the tournament against Yankuba Fatajo by a second-round technical knockout, stopping his opponent with a flurry of punches at the very last second of the round.
This proved to be his toughest fight of the night, as he was able to cleanly knock out Jolton Peregino with a left hook in the second round of the finals.