| Coaching career (HC unless noted) | |
|---|---|
| Football | |
| 1920–1921 | Louisiana Industrial/Tech |
| Baseball | |
| 1921–1922 | Louisiana Industrial/Tech |
| Head coaching record | |
| Overall | 11–1 (football) 17–3–1 (baseball) |
| Accomplishments and honors | |
| Championships | |
| Football 1 LIAA (1921) | |
R. Foster Clark was an American football and baseball coach at Louisiana Tech University. Clark has the highest winning percentage of any football and baseball head coach in Louisiana Tech history. Clark's 1921 football season went undefeated and won the Louisiana Intercollegiate Athletic Association (LIAA) title.
| Year | Team | Overall | Conference | Standing | Bowl/playoffs | ||||
|---|---|---|---|---|---|---|---|---|---|
| Louisiana Industrial/Tech (Louisiana Intercollegiate Athletic Association)(1920–1921) | |||||||||
| 1920 | Louisiana Industrial | 5–1 | 1–1 | ||||||
| 1921 | Louisiana Tech | 6–0 | 3–0 | 1st | |||||
| Louisiana Industrial/Tech: | 11–1 | 4–1 | |||||||
| Total: | 11–1 | ||||||||
| Season | Team | Overall | Conference | Standing | Postseason | ||||
|---|---|---|---|---|---|---|---|---|---|
| Louisiana Industrial/Tech ()(1921–1922) | |||||||||
| 1921 | Louisiana Industrial | ||||||||
| 1922 | Louisiana Tech | 17–3–1 | |||||||
| Louisiana Industrial/Tech: | 17–3–1 | ||||||||
| Total: | 17–3–1 | ||||||||
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