He was selected as a referee for the 2007 FIFA Under-20 World Cup in Canada, where he refereed the group stage match between Panama and Argentina, the quarterfinal between Chile and Portugal, where he sent off three players. In the latter match, he was involved in a bizarre incident where Portuguese player Zéquinha took the red card out of his hand while he was sending off Mano, to the bemusement of spectators and sports commentators, which in turn led to the prompt sending-off of Zéquinha. He also blew the whistle at the match between Scotland and Costa Rica. On 31 January 2010, Subkhiddin refereed the 2010 AFC Champions League qualifying play-off match, SHB Đà Nẵng vs. Muangthong United at the Chi Lăng Stadium in Da Nang.