Agnes Reisch made her international debut on August 14, 2013 as part of the Alpencup in Pöhla. At one of the following competitions from the Mittlere Schanze in Einsiedeln , she achieved her first podium placement in September. At the Nordic Ski Games of the OPA , the Allgäu woman won bronze in the individual and silver with the team. In the summer of 2014 she won all four Alpencup competitions in Pöhla and Bischofsgrün . As a result, she also won the most competitions and secured the overall victory.
In summer 2015, she was on the podium again in the first six competitions in the Alpine Cup. In September, the then 15-year-old achieved a podium finish in the Continental Cup for the first time with third place in Oslo.
At the end of January 2016, she made her World Cup debut in jumping in Oberstdorf and became the 13th best German athlete. In February Reisch took part in the Winter Youth Olympic Games in Lillehammer and was able to win the silver medal with the team.