In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

Robert Anthony John Hewitt (born 12 January 1940) is a former professional tennis player from Australia. In 1967, after marrying a South African, he became a South African citizen. He has won 15 major titles and a career Grand Slam in both men's and mixed doubles. Question: Who won the most Grand Slam titles in doubles, Bob Hewitt or Dick Crealy? Answer: Richard Crealy
He has won 15 major titles and a career Grand Slam in both mens and mixed doubles.