Once Sir John began started to work in the law courts, In major tournaments between 1925 and 1931, he competed at the
Wimbledon Championships six times in the men's singles events. He advanced to the third round in 1925 where he lost to the Indian player Jagat Mohan Lal, and 1926 where he was beaten by
Czech international
Jan Koželuh. His career singles highlights included winning the
Cinque Ports Championships three times in 1926, 1927 and 1929, the
Hampshire Championships in 1927, the South Herefordshire Championships in 1931 and 1934, the Birchington Open in 1933 and 1936, the
Wiltshire Championships in 1934 and 1935, and the
Kent Coast Championships in 1937 and 1938. ==Family==