April 24, 1891: Holmes was attacked by Moriarty’s henchmen. [FINA]
Now I have come round to you, and on my way I was attacked by a rough with a bludgeon. I knocked him down, and the police have him in custody; but I can tell you with the most absolute confidence that no possible connection will ever be traced between the gentleman upon whose front teeth I have barked my knuckles and the retiring mathematical coach, who is, I daresay, working out problems upon a blackboard ten miles away.
Date information provided by the volume A Day-by-Day Chronology of Mr. Sherlock Holmes, according to Zeisler and Christ, compiled and edited by William S Dorn.