Events in Sport
- Oct 1 NY Yankees record the 10,000th win in their illustrious history, and also clinch wild card slot; beat the Red Sox, 4-1, at a rainy New Yankee Stadium; NY bullpen ties MLB record with their 589th victim of the season
- Oct 3 Host nation England crashes out of Rugby World Cup in pool stage; loses to Australia, 33-13 at Twickenham; Bernard Foley scores 2 tries and kicks 4 penalties & 3 conversions for the Wallabies
President's Cup
Oct 11 Presidents Cup Golf, Jack Nicklaus GC Korea: Zach Johnson and Phil Mickelson go undefeated as US wins for the 6th successive time with a 15½–14½ victory over the International team

Phil Mickelson
- Oct 13 Basketball player Lamar Odom is hospitalised after being found unconscious in a brothel in Nevada
Event of Interest
Oct 17 Star forward Cristiano Ronaldo becomes Real Madrid's all-time leading scorer across all competitions, overtaking club legend Raul with his 324th goal in a 3-0 win over Levante

Cristiano Ronaldo
Event of Interest
Oct 25 British Mercedes driver Lewis Hamilton wins US F1 Grand Prix at the Circuit of the Americas to clinch his second consecutive World Drivers Championship

Lewis Hamilton
Event of Interest
Oct 27 American soccer star Abby Wambach announces her retirement

Abby Wambach
- Oct 28 Longest ever 1st game of Baseball World Series (5 hours, 9 minutes); Kansas City Royals beat New York Mets, 5-4; also joint longest by innings (14)
- Oct 30 Breeders' Cup Horse Racing, Keeneland Racetrack; Day 1 winners: Hit It A Bomb, Liam's Map, Catch A Glimpse, Stopchargingmaria
- Oct 30 Polish tennis star Agnieszka Radwańska wins the WTA Finals title at Kallang. Singapore; beats Czech Petra Kvitová 6–2, 4–6, 6–3
- Oct 31 8th Rugby World Cup Final, Twickenham, London: All Blacks fly-half Dan Carter lands 4 penalties and 2 conversions as New Zealand defeats Australia, 34-17
- Oct 31 Breeders' Cup Horse Racing, Keeneland Racetrack; Day 2 winners: Songbird, Mongolian Saturday, Wavell Avenue, Stephanie's Kitten, Runhappy, Tepin, Nyquist, Found, American Pharoah
Weddings in Sport
- Oct 10 Supermodel Hilary Rhoda (28) weds former pro hockey player Sean Avery (33) at the Parrish Art Museum in Long Island
Deaths in Sport
- Oct 2 Steve Camacho, West Indian cricket batsman, author, administrator (11 Tests, CEO WI Cricket Board), dies at 69
- Oct 6 Sandra Spuzich, American golfer (US Open 1966), dies of leukemia at 78
- Oct 11 Dean Chance, American baseball pitcher (MLB All-Star 1964, 67; Cy Young Award 1964; no-hitter 1967), dies at 74
- Oct 16 Mikhail Burtsev, Soviet sabre fencer (Olympic gold 1976, 1980), dies at 59
- Oct 17 Howard Kendall, English footballer and football manager (Everton), dies at 69
- Oct 23 Jim [James Wilfred] Roberts, Canadian NHL defenceman (1st Blues draft pick), dies at 75
- Oct 25 Basil Williams, West Indian cricket batsman (7 Tests, 2 x 100s; century on debut 1978), dies at 65
- Oct 30 Mel Daniels, American professional basketball player (Hall of Fame 2012), dies at 71