Takeichi Harada was Japanese but played tennis world-wide, and was likely one of the first players to compete at all four recognized Grand Slam Championships. Harada was Japanese doubles champion in 1923 and then moved to the United States to study at Harvard. He won titles in 1926 at the Florida State Championships, the 1929 Koshien Invitational (in Japan), and was 1929 Japanese champion in singles and doubles. Harada also made the finals of the 1926 Jamaican Championships and the 1930 Japan International.
Harada played at Wimbledon in 1924, 1927, and 1930, making the third round of singles in 1924 and 1930, and the third round of doubles in 1927. He played the US Championships from 1924-27, with a best finish in singles of the third round in 1925. He also competed at Roland Garros in 1930 and the Australian Championships in 1932. Harada played Davis Cup for Japan in 16 ties between 1924-30. He won 27 of 39 matches.
|1924 Summer||24||Paris||Tennis||Men's Singles||Japan||JPN||5T|
|1924 Summer||24||Paris||Tennis||Men's Doubles||Japan-2||JPN||16T|
|1924 Summer||24||Paris||Tennis||Japan||JPN||Quarter-Finals||Match #3||2||1924-07-17||De Morpurgo (ITA) 3, Harada (JPN) 0||0|
|1924 Summer||24||Paris||Tennis||Japan||JPN||Round Four||Match #6||1||Harada (JPN) 3, Gilbert (GBR) 1||3|
|1924 Summer||24||Paris||Tennis||Japan||JPN||Round Three||Match #12||AC||1924-07-15||Harada (JPN) walkover|
|1924 Summer||24||Paris||Tennis||Japan||JPN||Round Two||Match #24||1||Harada (JPN) 3, Å½emla (TCH) 1||3|
|1924 Summer||24||Paris||Tennis||Japan||JPN||Round One||Match #17||AC||1924-07-13||Harada (JPN) bye|
|1924 Summer||24||Paris||Tennis||Japan-2||JPN||Sunao Okamoto||Round Two||Match #11||2||ESP-2 3, JPN-2 1||1|
|1924 Summer||24||Paris||Tennis||Japan-2||JPN||Sunao Okamoto||Round One||Match #28||1||1924-07-14||JPN-2 3, DEN-1 0||3|