Yousif had to beat another fellow-compatriot, Hameed Taqi 267-213 in the first round and Kuwait's Khaled Al-Dubyyan, 190-173 in the second round before dispatching Fawaz Abdulla in the semi.
After four legs in the middle east, Kuwait leg champion, Hussain Al-Suwaidi led the tour rankings with 213 points with a victory, two seconds and a Round 2 appearance. Khaled is second with 156 points with Shaker moving into third with 124 points.
The women had only one leg held so far this year and Thailand's Angkana Netvriseth led with 75 points after victory in the Thailand leg last month. Korgunnya Aree of Thailand and Korea's Kim Eun Jung are second and third with 60 and 46 points.