| Biographical details | |
|---|---|
| Born | September 18, 1870 Philadelphia, Pennsylvania, U.S. |
| Died | December 16, 1948 (aged 78) |
| Alma mater | Penn Law School |
| Playing career | |
| Football | |
| 1889–1893 | Penn |
| 1895 | Duquesne Country & Athletic Club |
| Baseball | |
| 1891–1892 | Penn |
| Position(s) | Quarterback |
| Coaching career (HC unless noted) | |
| 1894 | Illinois |
| 1895 | Case |
| 1895 | Duquesne Country & Athletic Club |
| Head coaching record | |
| Overall | 4–5 (college) |
Louis De Pui "Bucker" Vail (September 18, 1870 – December 16, 1948) was an American football player and coach. Vail played football and graduated from Germantown Academy.[1] He attended the University of Pennsylvania, receiving both his A.B. and his LL.B.[2] He was a member of Delta Phi Fraternity. Vail played football at Penn as a quarterback from 1889 to 1893.[3] Vail also played baseball at Penn in 1891 and 1892.[4]