Andreas Maier signed with Assassin Boxing in October 2017, with a record of his 6 fights, 6 wins, and 5 KO’s.

Maier got a superb win over in Germany in November 2018, before falling to highly rated Phil Sutcliffe Jr later that month.

Andreas Maier fought for The German Title in Hannover in May 2018, where he fell narrowly short.