İki hafta sonra, Ten 2009 Dünya Gençler Artistik Patinaj Şampiyonasına girdi. Kısa programda 5. after being downgraded on the second jump in his triple-triple combination. In the free skate, Ten was credited with six triple jumps, including two triple axels, and received another downgrade on the second jump of his triple-triple combination. He placed 4th in that segment of the competition, placing 0.32 points behind third place finisher Artem Grigoriev in that segment of the competition. Ten placed 4th overall, ending the competition 0.63 points behind bronze medalist Grigoriev.