John Winton "Buck" Hopkins (January 3, 1883 – October 2, 1929) was a Major League Baseball outfielder. Nicknamed "Sis", he played fifteen games for the St. Louis Cardinals in 1907. Hopkins' minor league baseball career spanned fifteen seasons, between 1906 and 1920.
Buck Hopkins
| Given name: | John Winton Hopkins |
| Nicknames: | Sis |
| Primary Pos: | Centerfield |
| Hght/Wght: | 5'10" / 165 lbs |
| Bats/Throws: | L / L |
| Born: | Jan 3, 1883 in Grafton, VA |
| Died: | Oct 2, 1929 in Phoebus, VA (46 years old) |
| Debut: | Jul 22, 1907 |