伊藤潤二
Yamagami made his professional debut on August 3, 2008, at , against Hiroyuki Kondo, in the Shooto Flyweight Rookie Tournament quarterfinals. He won the fight by majority decision. After beating Yusuke Sato at by a second-round knockout, Yamagami was scheduled to fight Junji Ito at in the Rookie Tournament finals. Yamagami won the fight by a guillotine choke midway through the second round.