At the Junior Worlds Nagasu skated in the first half of the ladies' short program due to her lack of international skating experience which meant she had no ISU Personal Best on record. Ranked second behind Zhang in both segments of the competition (-1.95 points in the short, -3.46 points in the free), she won the silver medal with a total score 5.41 points less than champion Zhang and 6.69 points greater than bronze medalist Ashley Wagner. Zhang, Nagasu, and Wagner constituted the first ever sweep by the United States of the World Junior ladies' podium.