| Walt Slagle | |
| Width: | 125 |
| Position: | Pitcher |
| Bats: | Both |
| Throws: | Right |
| Birth Date: | 15 December 1878 |
| Birth Place: | Kenton, Ohio |
| Death Place: | San Gabriel, California |
| Debutleague: | MLB |
| Debutdate: | May 4 |
| Debutyear: | 1910 |
| Debutteam: | Cincinnati Reds |
| Finalleague: | MLB |
| Finaldate: | May 4 |
| Finalyear: | 1910 |
| Finalteam: | Cincinnati Reds |
| Statleague: | MLB |
| Stat1label: | Games played |
| Stat1value: | 1 |
| Stat2label: | Innings pitched |
| Stat2value: | 1 |
| Stat3label: | Earned runs |
| Stat3value: | 1 |
| Teams: | |
Walter Jennings Slagle (December 15, 1878 – June 14, 1974) was a pitcher in Major League Baseball. He played for the Cincinnati Reds in 1910.[1] His only major league game was attended by the President William Howard Taft, although Taft didn't stay for the entire game. Walt was 31 years old when he got to the big leagues, and pitched one inning. Although he gave up no hits, he did allow three walks and had one hit-batsman. His game was for the Cincinnati Reds against the St. Louis Cardinals, on May 4, 1910. He had a long minor league career as well stretching from 1897 to 1918. His career likely ended because he contracted the Spanish Flu in 1918 but he did survive.