| Continental cups (clubs) – Men – Champions League | 2020 |  | 11 September–29 December |
| Formula 1 – Grand Prix – Abu Dhabi Grand Prix | 2020 | | 13 December |
| World Championship – Men – Heavyweight | 2020 | | 12 December |
| Ultimate Fighting Championship – Men – Flyweight | 2020 | | 12 December |
| Formula 1 – Grand Prix – Sakhir Grand Prix | 2020 | | 6 December |
| Southern hemisphere – Rugby Championship (Match 6) | 2020 | | 5 December |
| Southern hemisphere – Rugby Championship | 2020 | | 31 October–5 December |
| Formula 1 – Grand Prix – Bahrain Grand Prix | 2020 | | 29 November |
| Southern hemisphere – Rugby Championship (Match 5) | 2020 | | 28 November |
| ATP Tour – ATP Tour Finals – Men's singles (Final) | 2020 | | 22 November |
| Honbasho – Kyūshū Basho (November) | 2020 | | 8–22 November |
| ATP Tour – ATP Tour Finals – Men's singles | 2020 | | 15–22 November |
| ATP Tour – ATP Tour Finals – Men's singles (Semifinal #1) | 2020 | | 21 November |
| Ultimate Fighting Championship – Men – Flyweight | 2020 | | 21 November |
| Ultimate Fighting Championship – Women – Flyweight | 2020 | | 21 November |
| Southern hemisphere – Rugby Championship (Match 4) | 2020 | | 21 November |
| ATP Tour – ATP Tour Finals – Men's singles (Semifinal #2) | 2020 | | 21 November |
| NBA – Draft | 2020 | | 18 November |
| Formula 1 – Grand Prix – Turkish Grand Prix | 2020 | | 15 November |
| World Cup – Men | 2020 | | 13–15 November |
| PGA Tour – Majors – Masters | 2020 | | 12–15 November |
| Southern hemisphere – Rugby Championship (Match 3) | 2020 | | 14 November |
| World Cup – Women | 2020 | | 8–10 November |
| ATP Tour – ATP Masters 1000 – Paris | 2020 | | 2–8 November |
| UCI World Tour – Vuelta a España – General standings | 2020 | | 20 October–8 November |
| Southern hemisphere – Bledisloe Cup (Match 4) | 2020 | | 7 November |
| Southern hemisphere – Rugby Championship (Match 2) | 2020 | | 7 November |
| Southern hemisphere – Bledisloe Cup | 2020 | | 11 October–7 November |
| Formula 1 – Grand Prix – Emilia Romagna Grand Prix | 2020 | | 1 November |
| Southern hemisphere – Bledisloe Cup (Match 3) | 2020 | | 31 October |
| Europe – Six Nations Championship (Round 5) | 2020 | | 31 October |
| Southern hemisphere – Rugby Championship (Match 1) | 2020 | | 31 October |
| Europe – Six Nations Championship | 2020 | | 1 February–31 October |
| Europe – Six Nations Championship (Round 5) | 2020 | | 31 October |
| Europe – Six Nations Championship (Round 5) | 2020 | | 31 October |
| MLB – Championships – World Series | 2020 | | 20–27 October |
| MLB – Championships – World Series (World Series) | 2020 | | 20–27 October |
| UCI World Tour – Giro d'Italia – General standings | 2020 | | 3–25 October |
| Formula 1 – Grand Prix – Portuguese Grand Prix | 2020 | | 25 October |
| Ultimate Fighting Championship – Men – Lightweight | 2020 | | 24 October |
| Europe – Six Nations Championship (Round 4) | 2020 | | 24 October |
| National championships – England – Premiership – Results | 2020 | | 18 October–24 October |
| MLB – Championships – World Series (NL Championship Series) | 2020 | | 12–18 October |
| UCI World Tour – Tour of Flanders | 2020 | | 18 October |
| Southern hemisphere – Bledisloe Cup (Match 2) | 2020 | | 18 October |
| Europe – Champions Cup | 2020 | | 15 November–17 October |
| MLB – Championships – World Series (AL Championship Series) | 2020 | | 11–17 October |
| Europe – Challenge Cup | 2020 | | 15 November–16 October |
| ATP Tour – Grand Slam – French Open | 2020 | | 27 September–11 October |
| NBA – Championships – NBA Finals | 2020 | | 30 September–11 October |
| Southern hemisphere – Bledisloe Cup (Match 1) | 2020 | | 11 October |
| Formula 1 – Grand Prix – Eifel Grand Prix | 2020 | | 11 October |
| ATP Tour – Grand Slam – French Open (Final) | 2020 | | 11 October |
| World Rally Championship (WRC) – Rallies – Rally Italy (Sardegna) | 2020 | | 8–11 October |
| Others – Paris-Tours | 2020 | | 11 October |
| NBA – Championships – NBA Finals (NBA Finals) | 2020 | | 30 September–11 October |
| UCI World Tour – Gent-Welvegem | 2020 | | 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 #2) | 2020 | | 9 October |
| MLB – Championships – World Series (AL Division Series #1) | 2020 | | 5–9 October |
| ATP Tour – Grand Slam – French Open (Semifinal #1) | 2020 | | 9 October |
| WTA Tour – Grand Slam – French Open (Semifinal #2) | 2020 | | 8 October |
| MLB – Championships – World Series (NL Division Series #2) | 2020 | | 6–8 October |
| MLB – Championships – World Series (NL Division Series #1) | 2020 | | 6–8 October |
| MLB – Championships – World Series (AL Division Series #2) | 2020 | | 5–8 October |
| WTA Tour – Grand Slam – French Open (Semifinal #1) | 2020 | | 8 October |
| NHL – Draft | 2020 | | 6–7 October |
| ATP Tour – Grand Slam – French Open (Quarterfinal #1) | 2020 | | 7 October |
| ATP Tour – Grand Slam – French Open (Quarterfinal #2) | 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 |
| WTA Tour – Grand Slam – French Open (Quarterfinal #3) | 2020 | | 6 October |
| WTA Tour – Grand Slam – French Open (Quarterfinal #1) | 2020 | | 6 October |
| WTA Tour – Grand Slam – French Open (Quarterfinal #2) | 2020 | | 6 October |
| WTA Tour – Grand Slam – French Open (Quarterfinal #4) | 2020 | | 6 October |
| UCI World Tour – Liège-Bastogne-Liège | 2020 | | 4 October |
| MLB – Championships – World Series (NL Wild Card Game) | 2020 | | 30 September–2 October |
| MLB – Championships – World Series (NL Wild Card Game) | 2020 | | 30 September–2 October |
| MLB – Championships – World Series (NL Wild Card Game) | 2020 | | 30 September–1 October |
| MLB – Championships – World Series (NL Wild Card Game) | 2020 | | 30 September–1 October |
| MLB – Championships – World Series (AL Wild Card Game) | 2020 | | 29 September–1 October |
| MLB – Championships – World Series (AL Wild Card Game) | 2020 | | 29–30 September |
| UCI World Tour – Flèche Wallonne | 2020 | | 30 September |
| MLB – Championships – World Series (AL Wild Card Game) | 2020 | | 29–30 September |
| MLB – Championships – World Series (AL Wild Card Game) | 2020 | | 29–30 September |
| NHL – Championships – Stanley Cup finals | 2020 | | 19–28 September |
| NHL – Championships – Stanley Cup finals (Stanley Cup Finals) | 2020 | | 19–28 September |
| Formula 1 – Grand Prix – Russian Grand Prix | 2020 | | 27 September |
| Ultimate Fighting Championship – Men – Middleweight | 2020 | | 27 September |
| Ultimate Fighting Championship – Men – Light-heavyweight | 2020 | | 27 September |
| World Championships – Men – Road race | 2020 | | 27 September |
| NBA – Championships – NBA Finals (Eastern conf. final) | 2020 | | 15–27 September |
| ATP Tour – ATP Masters 500 – Hamburg | 2020 | | 20–27 September |
| Honbasho – Aki Basho (September) | 2020 | | 13–27 September |
| World Championships – Women – Road race | 2020 | | 26 September |
| NBA – Championships – NBA Finals (Western conf. final) | 2020 | | 18–26 September |
| World Championships – Men – Time trial | 2020 | | 25 September |
| World Championships – Women – Time trial | 2020 | | 24 September |
| ATP Tour – ATP Masters 1000 – Rome | 2020 | | 14–21 September |
| PGA Tour – Majors – US Open | 2020 | | 17–20 September |
| World Rally Championship (WRC) – Rallies – Rally Turkey | 2020 | | 18–20 September |
| UCI World Tour – Tour de France – Mountains classification | 2020 | | 29 August–20 September |
| UCI World Tour – Tour de France – General standings | 2020 | | 29 August–20 September |
| UCI World Tour – Tour de France – Points classification | 2020 | | 29 August–20 September |
| 24 hours of Le Mans – Drivers | 2020 | | 19–20 September |
| NHL – Championships – Stanley Cup finals (Eastern conf. final) | 2020 | | 7–17 September |
| NBA – Championships – NBA Finals (Western conf. semifinal #1) | 2020 | | 3–15 September |
| NHL – Championships – Stanley Cup finals (Western conf. final) | 2020 | | 6–14 September |
| ATP Tour – Grand Slam – US Open | 2020 | | 31 August–13 September |
| Formula 1 – Grand Prix – Tuscan Grand Prix | 2020 | | 13 September |
| ATP Tour – Grand Slam – US Open (Final) | 2020 | | 13 September |
| WTA Tour – Grand Slam – US Open | 2020 | | 31 August–12 September |
| National championships – Celtic League – Results | 2020 | | 27 September–12 September |
| NBA – Championships – NBA Finals (Western conf. semifinal #2) | 2020 | | 4–12 September |
| WTA Tour – Grand Slam – US Open (Final) | 2020 | | 12 September |
| ATP Tour – Grand Slam – US Open (Semifinal #2) | 2020 | | 11 September |
| ATP Tour – Grand Slam – US Open (Semifinal #1) | 2020 | | 11 September |
| NBA – Championships – NBA Finals (Eastern conf. semifinal #1) | 2020 | | 30 August–11 September |
Past events
