ISLAMABAD: China’s Xiuyuan Guo and Sri Lanka’s Dinara De Silva’s won the respective boys’ and girls’ singles titles of the ITF Pakistan World Junior Tennis Championship (Leg-2) here at the Mushaf Squash Comples on Saturday, marking the end of the tournament. While Guo beat South Korea’s Sion Ji 7-6 (3), 6-2, De Silva overcame Kazakhstan’s Karolina Ligai 6-3, 6-4 The event brought together 80 junior players from around the globe.