Reds: The only Reds players I could find born on August 10 were marginal turn-of-the century guys like Winfield Scott Hastings and the immortal Chink Heileman. Anyone who has any humorous anecdotes about these two, feel free to share...
Others:
Rocky Colavito (78) -Still a folk hero in Cleveland.
Clint Hartung -"The Hondo Hurricane"; a big kid from Hondo, Texas who was thought to have superstar ability both as a hitter and a pitcher. What happened next is best summarized by his other listed nickname: "Floppy".
Buddy Lewis -Would have been one of the greats except for that pesky World War Two, plus he played most of his career in Griffith Stadium, which hid most of his power, as it did for Meyer, Kuhel, Goslin, etc.