- Oct 4 Young Stribling ostensibly beats Mike McTigue on points in Columbus, Georgia for world light-heavyweight boxing title; referee Harry Ertle later calls fight a draw, claims coerced by promoters to award fight to Stribling; McTigue retains title
- Oct 6 1st NL unassisted triple play (Ernie Padgett, Braves against Phillies)
- Oct 7 Yankees Everett Scott runs his consecutive-game streak to 1,138
- Oct 10 NY Giants & NY Yankees become first teams to play each other in 3 consecutive Baseball World Series; Giants win Game 1, 5-4; first WS game played at Yankee Stadium
- Oct 15 Baseball World Series: NY Yankees beat NY Giants, 6-4 in Game 6 at the Polo Grounds for a 4-2 series win; Yankees first World Series victory
AL Prohibits Boxing
Oct 19 Ban Johnson persuades AL owners to prohibit boxing in their parks