Yemen took the lead on the quarter-hour mark when Akram Al-Warafi latched onto a through pass and notched home with aplomb.

Qatar equalized in the 35th minute after striker Jaralla Al Marri rounded off a fine passing move.

Zamalek's attacking midfielder Hussein Yasser released Qatar's right back with a deft pass and the latter crossed for Al Marri to find the net from five yards out.

Al Marri gave Qatar all three points ten minutes after the restart after capitalizing on a dreadful defensive blunder.

Zamalek initially declined not to allow Yasser to take part in the Gulf Cup but the Egyptian-born forward still linked up with his country against the club's wish.

The White Knights were due to file a complaint with FIFA against Qatar on the grounds that the regional tournament is not included in the world governing body's calendar.

However, they eventually backed down after Qatar paid them $100,000 in compensation.

Qatar, who slumped to a 1-0 defeat by Kuwait in their first game, have three points from two games in Group A.

Saudi Arabia top the group on four points, ahead of second-placed Kuwait on goal difference.