He is ranked as the fifth best welterweight in the world by Combat Press as of September 2022,[1] and the fourth best by Beyond Kickboxing as of October 2022.
[3] Semeleer holds notable wins over Jay Overmeer (2X), Murthel Groenhart, Alim Nabiev, Marouan Toutouh (2X), Superbon Banchamek, Diogo Calado, and Mohamed Khamal In 2016 Endy participated in an eight man King of the Ring tournament.
In the finals of the tournament, Endy faced the kickboxing and muay thai legend Superbon Banchamek.
[15] Semeleer made his first -75 kg title defense against Marouan Toutouh at Enfusion 85 on June 8, 2019.
[17] Semeleer once again attempted to capture the 72.5 kg World title at Enfusion 98 on October 3, 2019, as he was booked to face Nordin van Roosmalen.
[19] Semeleer was booked to face the two-time Dutch kickboxing champion Kevin Hessling on September 11, 2021, at the Enfusion's Nijmegen event.
[24] The event was later postponed, as The Lotto Arena announced that their cooperation with the Antwerp Fight Organisation had been terminated due to various administrative reasons.
[25] Semeleer was expected to face Robin Ciric in the main event of Glory Rivals 2 on July 25, 2022.
[30] Semeleer made his first welterweight title defense against Murthel Groenhart at Glory 85 on April 29, 2023.
[31] He retained the title by unanimous decision, after knocking Groenhart down several times, with all five judges awarding him a 50–42 scorecard.