| Formula 1 – Grand Prix – Portuguese Grand Prix | 2020 |  | 25 October |
| UCI World Tour – Giro d'Italia – General standings | 2020 | | 3–25 October |
| National championships – England – Premiership – Results | 2020 | | 18 October–24 October |
| Europe – Six Nations Championship (Round 4) | 2020 | | 24 October |
| Ultimate Fighting Championship – Men – Lightweight | 2020 | | 24 October |
| UCI World Tour – Tour of Flanders | 2020 | | 18 October |
| MLB – Championships – World Series (NL Championship Series) | 2020 | | 12–18 October |
| Southern hemisphere – Bledisloe Cup (Match 2) | 2020 | | 18 October |
| MLB – Championships – World Series (AL Championship Series) | 2020 | | 11–17 October |
| Europe – Champions Cup | 2020 | | 15 November–17 October |
| Europe – Challenge Cup | 2020 | | 15 November–16 October |
| Others – Paris-Tours | 2020 | | 11 October |
| Formula 1 – Grand Prix – Eifel Grand Prix | 2020 | | 11 October |
| UCI World Tour – Gent-Welvegem | 2020 | | 11 October |
| ATP Tour – Grand Slam – French Open | 2020 | | 27 September–11 October |
| Southern hemisphere – Bledisloe Cup (Match 1) | 2020 | | 11 October |
| ATP Tour – Grand Slam – French Open (Final) | 2020 | | 11 October |
| NBA – Championships – NBA Finals (NBA Finals) | 2020 | | 30 September–11 October |
| World Rally Championship (WRC) – Rallies – Rally Italy (Sardegna) | 2020 | | 8–11 October |
| NBA – Championships – NBA Finals | 2020 | | 30 September–11 October |
| WTA Tour – Grand Slam – French Open | 2020 | | 27 September–10 October |
| WTA Tour – Grand Slam – French Open (Final) | 2020 | | 10 October |
| ATP Tour – Grand Slam – French Open (Semifinal #1) | 2020 | | 9 October |
| MLB – Championships – World Series (AL Division Series #1) | 2020 | | 5–9 October |
| ATP Tour – Grand Slam – French Open (Semifinal #2) | 2020 | | 9 October |
| WTA Tour – Grand Slam – French Open (Semifinal #2) | 2020 | | 8 October |
| MLB – Championships – World Series (AL Division Series #2) | 2020 | | 5–8 October |
| MLB – Championships – World Series (NL Division Series #1) | 2020 | | 6–8 October |
| MLB – Championships – World Series (NL Division Series #2) | 2020 | | 6–8 October |
| WTA Tour – Grand Slam – French Open (Semifinal #1) | 2020 | | 8 October |
| ATP Tour – Grand Slam – French Open (Quarterfinal #1) | 2020 | | 7 October |
| ATP Tour – Grand Slam – French Open (Quarterfinal #3) | 2020 | | 7–6(1) 5–7 6–7(8) 7–6(5) 6–2 | | |
| 7 October |
| ATP Tour – Grand Slam – French Open (Quarterfinal #4) | 2020 | | 7 October |
| ATP Tour – Grand Slam – French Open (Quarterfinal #2) | 2020 | | 7 October |
| NHL – Draft | 2020 | | 6–7 October |
| WTA Tour – Grand Slam – French Open (Quarterfinal #4) | 2020 | | 6 October |
| WTA Tour – Grand Slam – French Open (Quarterfinal #3) | 2020 | | 6 October |
| WTA Tour – Grand Slam – French Open (Quarterfinal #2) | 2020 | | 6 October |
| WTA Tour – Grand Slam – French Open (Quarterfinal #1) | 2020 | | 6 October |
| UCI World Tour – Liège-Bastogne-Liège | 2020 | | 4 October |
Past events
