 In March 2006, Sithchatchawal took part in what later won Ring Magazine fight of the year when he challenged WBA Super Bantamweight champion Mahyar Monshipour.Sithchatchawal dropped Monshipour in the first round, and won via TKO in the 10th round to capture the belt.Sithchatchawal lost his WBA world super-bantamweight belt to Celestino Caballero in Sithchatchawal's native country of Thailand on October 4, 2006.