KATHMANDU:Taekwondo coach and international referee Dinesh Shrestha is on Monday leaving for United States of America to officiate in the US Open slated for February 2-7 in Navada. Shrestha was nominated as the Official International Referee by the organisers. After the tournament, Shrestha will participate in the Poomsae Seminar to be held at the Everest World Class Taekwondo Academy in Baltimore from February 26-28, while he is also scheduled to officiate in American Open International Taekwondo Championship in California from March 25-26 and National Capital Open Championship slated for April 21-22 in Virginia.