|Full name||Herbert James Leopold Coates|
|Date of birth||1901|
|Place of birth||West Ham, England|
|Date of death||25 October 1965|
|Place of death||Southsea, England|
|Height||5 ft 8 in (1.73 m)|
|Playing position||Inside left|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Coates was born in West Ham in east London and joined the Royal Navy, where he served on the Royal Yacht "Victoria and Albert". He represented the Royal Navy at football at an amateur level, but in October 1927 he joined Southampton of the Football League Second Division.
He made his Southampton debut away to Chelsea on 27 October 1928, replacing the ageing Charlie Petrie at inside-left. After six matches, in which he failed to score, he was replaced by Dick Rowley. His duties on the Royal Yacht tended to restrict his appearances, but by the end of the season he had made 14 appearances, scoring seven goals (including one in each of his last five appearances), as the Saints finished fourth in the table, their highest League finish to date.
In the following season, he was a regular starter until early March, with Peter Dougall generally filling in when Coates was not available; Coates made a total of 25 appearances during the season, with four goals. For the 1930–31 season, he was restricted to sixteen appearances, most of which came in a spell between late September and December in which he scored seven goals, including two in a 5–0 victory over Bury on 13 December.
"One of the finest inside lefts that ever wore an England Amateur jersey, and his clever dribbling, his brilliant anticipation and his terrific shots more than compensated for the fact that his play may have been a bit on the showy side."
For the 1931–32 season, Arthur Wilson had taken over from Dougall as the regular inside-left, but Coates did manage a run of seven games between September and November, plus three later appearances across the forward line. At the end of the season, both Dougall and Wilson had left the club and Coates hardly missed a match in 1932–33 (making 30 appearances) until April, when Tom Ruddy replaced him. In a league match at Bradford City on 15 October 1932, Coates had to deputise in goal for Bert Scriven when he was injured. The "Football Echo" reported that "Coates was tucking his jersey into his shorts when Bradford scored immediately following the restart and before the amateur was ready" – this was the only goal of the game.
Coates continued to play for the Royal Navy until 1937. After the Second World War, he settled in the Portsmouth area where he became the manager of a public house in 1945. He later worked for the Southern Electricity Board.
- Holley, Duncan; Chalk, Gary (1992). The Alphabet of the Saints. ACL & Polar Publishing. p. 80. ISBN 0-9514862-3-3.
- Chalk, Gary; Holley, Duncan (1987). Saints – A complete record. Breedon Books. pp. 80–81. ISBN 0-907969-22-4.
- Saints – A complete record. pp. 82–83.
- Saints – A complete record. pp. 84–85.
- Saints – A complete record. p. 309.
- Saints – A complete record. pp. 86–87.
- Saints – A complete record. pp. 88–89.
- Saints – A complete record. pp. 90–91.