Both men started well and notched up the points with some decent scoring shots. However, it was Omarov who took the lead in the second.
He began pounding away at the guard of the Azeri, who was beginning to feel the pace.
The Russian was now starting to find his range with his big left hand. He wobbled Medzhidov with some powerful shots to edge one point in front.
Omarov threw a straight right hand that penetrated Medzhidov's guard and rocked his head back early in the third. The Azeri tried to reply but could not find his accuracy.
Medzhidov produced a rousing finish and the judges felt that was enough to earn a 17-14 victory.