'Strange number, Martina who?' Lucky I answered, says Vandeweghe

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 20/1/17 Coco Vandeweghe of the U.S. hits a shot during her Women's singles third round match against Canada's Eugenie Bouchard. REUTERS/Jason Reed

MELBOURNE (Reuters) - Coco Vandeweghe was in two minds whether to answer the call when an unknown number with a strange international dialling code popped up on her telephone last year.

Luckily, she said, she answered it rather than do what she normally does and divert it to voice mail.