- Oct 2 Bob Gibson, American Baseball Hall of Fame pitcher (NL Cy Young Award 1968, 70; NL MVP 1968; 9 x MLB All Star; St. Louis Cardinals), dies from pancreatic cancer at 84
- Oct 2 Bob Miller, American ice hockey center (47 games USA; Boston Bruins, Colorado Rockies, LA Kings), dies at 64
- Oct 2 Ron Perranoski, American baseball pitcher (World Series 1963, 65; AL saves leader 1969, 70; LA Dodgers) and coach (World Series 1981, 88; LAD), dies at 84
- Oct 8 Charles Moore, American 400m hurdler (Olympic gold & silver 1952), dies at 91
Whitey Ford (1928-2020)
Oct 8 American Baseball HOF pitcher (10 x MLB All Star; World Series 1950, 53, 56, 58, 61 [MVP], 62; AL Cy Young Award 1961; NY Yankees), dies from dementia at 91
- Oct 10 Vasili Kulkov, Russian soccer defensive utility (20 caps Soviet Union, 21 Russia; Spartak Moscow, Benfica), dies from cancer at 54
- Oct 11 Ângelo Martins, Portuguese soccer defender (20 caps; Benfica 231 games), dies at 90
- Oct 11 Gary F. Jones, American thoroughbred racehorse trainer ($52.6m in purses; 1,465 race wins; US Racing HOF), dies at 76
Joe Morgan (1943-2020)
Oct 11 American Baseball HOF infielder (10 × MLB All-Star; World Series 1975, 76; NL MVP 1975, 76; Cincinnati Reds) and broadcaster (ESPN), dies at 77
- Oct 12 Nevzat Güzelırmak, Turkish soccer defender (18 caps; Göztepe) and manager (Denizlispor; Turkey U21), dies at 78
- Oct 13 Augusto Matine, Portuguese soccer midfielder (9 caps; Benfica, Vitória de Setúbal) and manager (Mozambique national team), dies at 73
- Oct 14 Fred Dean, American Pro Football Hall of Fame defensive end (Pro Bowl 1979–81, 83; First-team All-Pro 1980, 81; Super Bowl 1981, 84; SD Chargers, SF 49ers), dies from COVID-19 at 68
- Oct 14 John Reid, New Zealand cricket all-rounder and captain (58 Tests; 6 x 100s; 85 wickets) and ICC Match Referee (50 Tests 1993-2002), dies at 92
- Oct 15 Sonja Edström-Ruthström, Swedish cross-country skier (Olympic gold 3 × 5k relay 1960), dies at 89
- Oct 16 Andrzej Pogorzelski, Polish motorcycle speedway rider (Speedway World Team Cup gold 1965, 66, 69), dies at 82
- Oct 16 Rodolfo Fischer, Argentine soccer striker (35 caps; San Lorenzo 271 games), dies at 76
- Oct 20 Bill Mathis, American football halfback (AFL All Star 1961, 63; New York Titans/Jets), dies at 81
- Oct 20 Bruno Martini, French soccer goalkeeper (31 caps; Auxerre, Nancy, Montpellier), dies from heart failure at 58
- Oct 20 Derryl Cousins, American baseball umpire (World Series 1988, 99, 2005; MLB All-Star Game 1987, 98, 2008), dies from cancer at 74
- Oct 21 Gordon Astall, English soccer forward (2 caps; Birmingham City 235 games, 59 goals), dies from dementia at 93
- Oct 22 Matt Blair, American football linebacker (6 × Pro Bowl 1977–82; First-team All-Pro 1980; Minnesota Vikings), dies from dementia complications at 70
- Oct 23 Ebbe Skovdahl, Danish soccer manager (Brøndby IF, Benfica, Aberdeen), dies from cancer at 75
- Oct 23 W. C. Gorden, American College Football Hall of Fame coach (Jackson State University, 1976-91, record 119–48–5), dies at 90
- Oct 28 Miguel Ángel Castellini, Argentine boxer (WBA, lineal light middleweight titles 1976-77), dies from COVID-19 at 73
- Oct 29 J. J. Williams, Welsh rugby union winger (30 caps Wales, 7 British & Irish Lions; Grand Slam 1976, 78), dies at 72
- Oct 29 Slaven Zambata, Croatian soccer forward (31 caps Yugoslavia; Dinamo Zagreb), dies at 80
- Oct 30 Herb Adderley, American Pro Football HOF cornerback (Super Bowl 1967, 68, 71; 5 x Pro Bowl; 4 × First-team All-Pro; Green Bay Packers, Dallas Cowboys), dies from COVID-19 at 81
- Oct 30 Nobby Stiles, English soccer midfielder (28 caps; World Cup 1966; Manchester United 311 games) and manager (Preston NE, WBA), dies from dementia at 78
- Oct 31 Marius Žaliūkas, Lithuanian soccer centre back (25 caps; Hearts, Leeds, Rangers), dies from motor neurone disease at 36
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Tennis Champions