Marcin Bieniek - Tennis coach at ITF/WTA/ATP level - Author of tennis book "Tenisowy Olimp" - Coach of ITF junior Grand Slam players - Coach of Polish National Champions - Polish Captain at Individual European Championship - Speaker at tennis and sport conferences - Author of athletic podcast "Życie sportowca" - Author of tennis blog enjoytennisblog.wordpress.com - Author of instructional articles in tennis magazines and on tennis websites