Angelique Kerber started playing tennis at the age of three.
She then followed up with wins against Alla Kudryavtseva, again in three sets, reaching quarterfinals where she defeated Monica Niculescu.
Beltz, a 44-year-old German who used to coach former world number one Angelique Kerber, is not in Austria with Raducanu this week.
Torben Beltz was born on November 27, 1976, in Itzehoe, Schleswig-Holstein in Germany.
As a reality, Torben is an expert mentor for Kerber.
Wimbledon champion Angelique Kerber has confirmed that Rainer Schuttler has taken over the reigns as her new coach.