 Complete the following phrase:  Kerber made her senior debut season in 2012 when she competed at the 2012 Schmiden International, finishing 7th in all-around. In 2013, Kerber competed at the senior US Championships finishing 2nd in all-around behind Rebecca Sereda. She won bronze in all-around at the Calais de France and at the 2013 Schmiden International, as well as qualifying to all 4 event finals. Kerber competed in the 2013 World Cup series in Corbeil-Essonnes, France and finished 18th in all-around. Kerber appeared in her first Worlds at the 