Rainer Schuettler Pictures
INDIAN WELLS, CALIFORNIA - MARCH 17: Angelique Kerber of Germany listens to her coach Rainer Schuettler in her match against Bianca Andreescu of Canada during their women's singles final on day fourteen of the BNP Paribas Open at the Indian Wells Tennis Garden on March 17, 2019 in Indian Wells, California. (Photo by Clive Brunskill/Getty Images)