Arno Casteleyn started his career aged 27 on October 2011. After 11 fights, Casteleyn remains unbeaten with no sign of being beaten after building up his record of 11 wins and a career lasting 8 years so far. Casteleyn's longest win streak is 11 fights between October 2011 and October 2013. His longest KO streak in his 11 fights is 1 fights long.
In a great debut, Casteleyn took on Slavomir Dendis in a 6 round fight, becoming the 36th person to stop Dendis in his 51 fight career to date. Maintaining a successful start proved easy for Casteleyn with a further 6 wins, beating boxers such as Antonio Manuel, Attila tibor Nagy and Jessy Moreaux.
Next was Attila tibor Nagy on October 6th, 2012 where Casteleyn took the win continuing his unbeaten streak. Becoming the first person to stop Attila tibor Nagy, Casteleyn beat Nagy via TKO in the 6th round of a 6 round fight. Casteleyn then went on to win a further 3 fights taking his record to 8 wins, 0 losses and 0 draws.
Next was Ringo Verbauwhede on February 23rd, 2013 where Casteleyn took the win continuing his unbeaten streak. Casteleyn fought Ringo Verbauwhede. Casteleyn was the first person to go the distance with this opponent resulting in a win for Casteleyn.
Next was Cedric De keirsmaecker on April 19th, 2013 where Casteleyn took the win continuing his unbeaten streak. Showing his class against De keirsmaecker, Casteleyn was the 2nd person to go the distance with this opponent.
Arno Casteleyn went into his latest fight with Lubo Hantak on October 12th, 2013 with 10 wins and he continued this winning streak taking it to 11 wins. Casteleyn beat Lubo Hantak in the 2nd round of a 6 round fight via KO. Casteleyn was the 19th fighter to stop Hantak.