 Throughout his sporting career, Aghayev trained for Neftçi Sports Club in Baku, under his personal coach and mentor Dyevanshir Kurbanov.Aghayev qualified for his adopted Azerbaijan squad in the men's heavyweight class (96 kg) at the 2004 Summer Olympics in Athens, by placing third and receiving a berth from the Olympic Qualification Tournament in Bratislava, Slovakia.In the prelim pool, Aghayev eclipsed Kazakhstan's Islam Bairamukov with a 7–2 division on his opening bout, and grappled Namibia's Nico Jacobs into the ring at the peak of the first minute by an eleven-point advantage, earning him a spot for the quarterfinals.