 Complete the following phrase:  Vitali Schulz arranged a tryout between Dieck and Katharina Müller. They teamed up in April 2014, coached by Schulz und James Young in Dortmund. Assigned to two 201415 ISU Junior Grand Prix events, they placed 8th in Ljubljana, Slovenia, and 7th in Aichi, Japan. After winning the 2015 German junior national title, they were sent to the 