Douglas Mayer

Douglas Mayer is the head coach of Ataque Duplo BJJ in Hannover and holds a second-degree black belt under the parent association Ataque Duplo in Florianópolis, Brazil. Since 2020 he has served as head coach and first chairman of the Ataque Duplo BJJ Association e.V. He leads a coaching team that also includes first-degree black belt Andreas and black belt Robin, and the club describes its coaches as having decades of coaching and competition experience, with sessions oriented toward technique and conditioning in a learning-friendly atmosphere. Mayer also heads the club's competition preparation, supporting members at regional, national and international BJJ tournaments and cornering them on the mat.