| Pony Sager | |
| Position: | Shortstop / Outfielder |
| Birth Date: | 12 August 1848 |
| Birth Place: | Holmesburg, Pennsylvania |
| Death Place: | Newport, New Hampshire |
| Debutleague: | MLB |
| Debutdate: | May 6 |
| Debutteam: | Rockford Forest Citys |
| Finalleague: | MLB |
| Finaldate: | May 30 |
| Finalteam: | Rockford Forest Citys |
| Statleague: | MLB |
| Stat1label: | Games played |
| Stat1value: | 8 |
| Stat2label: | Batting average |
| Stat2value: | .282 |
| Stat3label: | Runs batted in |
| Stat3value: | 5 |
| Teams: |
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Samuel B. "Pony" Sager (August 12, 1848 – October 15, 1928) was a Major League Baseball left fielder and shortstop for one month in 1871. He played for the Rockford Forest Citys of the National Association.
From May 6 to May 30, Sager played in eight games for the club, four in left field and four at shortstop. He was a below-average fielder at both positions, but did show speed and a strong bat. He went 11-for-39 (.282) with five runs batted in, five stolen bases, and nine runs scored.
One of Sager's teammates on the Forest Citys was 19-year-old future Baseball Hall of Famer Cap Anson, his teammate from Marshalltown, Iowa whom he convinced the team to sign.