- Jan 1 7th Rose Bowl: California beats Ohio State 28-0
- Jan 26 Soccer team GVAV of Groningen Neth forms
- Jan 26 Toronto NHL center Corb Denneny scores 6 goals to lead St. Patricks to a 10-3 win over Hamilton Tigers in Toronto
- Feb 5 Yankees purchase 20 acres in Bronx for Yankee Stadium
- Feb 15 Arthur Mailey completes 9-121 v England, Australian Test Cricket rec
- Feb 27 US Female Figure Skating championship won by Theresa Weld Blanchard; US male Figure Skating championship won by Sherwin Badger
- Mar 1 Spin bowler Arthur Mailey takes 5 for 119 (record 36 wickets for series) to lead Australia to a 9 wicket 5th Test win over England in Sydney; first ever, 5-0 Ashes cricket series win for Australia
- Mar 18 80th Grand National: Fred Rees wins aboard 100/9 bet Shaun Spadah; winner is only horse to complete the course without falling
- Apr 4 Stanley Cup Final, Denman Arena, Vancouver, BC: Ottawa Senators (NHL) beat Vancouver Millionaires (PCHA), 2-1 for a 3-2 series victory
- Apr 11 KDKA broadcast 1st radio sporting event, a boxing match (Ray-Dundee)
- Apr 14 NHL Championship: Ottawa Senators sweep Toronto St Patricks in 2 games
- Apr 18 25th Boston Marathon won by Frank Zuna in race record 2:18:57.6
- Apr 30 American Professional Football Association reorganizes in Akron
- Apr 30 1st American Professional Football Association Championship (1920): undefeated Akron Pros awarded inaugural title
- May 6 American Soccer League forms
- May 7 47th Kentucky Derby: Charles Thompson on Behave Yourself wins 2:04.2
- May 16 46th Preakness: F Coltiletti aboard Broomspun wins in 1:54.2
- May 30 Indianapolis 500: Tommy Milton wins in 5:34:44.578 (144.231 km/h)
- Jun 11 53rd Belmont: Earl Sande riding Grey Lag wins in 2:16.8
- Jun 13 Yanks' pitcher Babe Ruth hits 2 HRs beating Tigers 11-8
- Jun 21 HSC '21 soccer team forms in Haaksbergen
World Record
Jun 22 Paavo Nurmi runs world record 10,000m (30:40.2)
Paavo Nurmi
- Jun 25 British Open Men's Golf, St Andrews: former local Jock Hutchison (resident in US) wins his only Open Championship by 9 strokes in a 36-hole playoff over amateur Roger Wethered
Wimbledon Women's Tennis
Jul 1 Wimbledon Women's Tennis: Suzanne Lenglen of France beats doubles specialist Elizabeth Ryan 6-2, 6-0 for her 3rd straight Wimbledon singles title
Elizabeth Ryan
- Jul 2 Wimbledon Men's Tennis: Bill Tilden beats South African Brian Norton 4-6, 2-6, 6-1, 6-0, 7-5 for the third of 10 Grand Slam singles titles
Boxing Title Fight
Jul 2 In boxing's first million dollar gate ($1.7m), world heavyweight champion Jack Dempsey KOs Frenchman Georges Carpentier in round 4 of his 3rd title defence; crowd 91,000 at Boyle's Thirty Acres in Jersey City, New Jersey
Jack Dempsey
- Jul 12 Indians (9) & Yankees (7) combine for an AL record 16 doubles
- Jul 18 Babe Ruth achieves 139 home runs and becomes the all-time home run leader in Major League Baseball, taking the title from Roger Connor
- Jul 18 Babe Ruth smacks a home run a MLB record 575 feet in New York Yankees' 10-1 win over the Tigers at Detroit's Navin Field
- Jul 21 Indians (9) & Yankees (7) hit a record 16 doubles
US Golf Open
Jul 22 US Open Men's Golf, Columbia CC: Englishman Jim Barnes wins the 3rd of his 4 major titles by 9 strokes ahead of runners-up Walter Hagen and Fred McLeod
Jim Barnes
Walter Hagen
- Aug 2 After 3 hours deliberation a Chicago jury acquits 8 Chicago White Sox accused in Black Sox scandal; next day they are banned from organised baseball for life
- Aug 3 MLB Commissioner Kenesaw Landis hands out life bans to 8 Chicago White Sox players accused in Black Sox scandal despite their acquittal by a Chicago jury
- Aug 5 KDKA Pittsburgh presents first radio broadcast of MLB; Pirates beat Phillies, 8-0; Harold Arlin first play-by-play broadcaster
- Aug 7 Dutch cyclist Piet Moeskops wins the 1st of 4 straight, and 5 total world sprint championships when he beats defending champion Bob Spears of Australia in Copenhagen
- Aug 20 US National Championship Women's Tennis, Germantown CC, PA: Molla Bjurstedt Mallory wins her 6th US singles title; beats 3-time champion Mary Browne 4-6, 6-4, 6-2
- Aug 25 Yankee pitcher Harry Harper hits 3 batters in an inning tying record
- Aug 27 J E Clair of Acme Packing Co of Green Bay granted an NFL franchise
- Aug 28 Babe Ruth starts streak of an extra-base hit in 9 straight games
- Sep 3 International Lawn Tennis Challenge, NYC, NY: Americans Watson Washburn & William Norris beat Japanese pair Ichiya Kumagae & Zenzo Shimizuto 6-2, 7-5, 4-6, 7-5 for 3-0 lead; ends 5-0
Baseball Record
Sep 5 Walter Johnson sets MLB strikeout mark at 2,287
Walter Johnson
- Sep 19 US National Championship Men's Tennis, Germantown CC, Philadelphia: Bill Tilden successfully defends title; beats Wallace F. Johnson 6-1, 6-3, 6-1
- Sep 26 Yankee Ruth hits HRs 57 & 58 to beat Indians 8-7
- Sep 27 MLB NY Yankees beat Cleveland Indians 21-7 at Polo Grounds, NYC
- Sep 27 American swimmer Johnny Weismuller sets his first 2 world records in the 100m and 150yd freestyle events the A.A.U. Nationals meet in Brighton Beach, NY
PGA Championship
Sep 28 4th PGA Championship: Walter Hagen at Inwood CC Far Rockaway NY
Walter Hagen
- Oct 1 PGA Championship Men's Golf, Inwood CC: Walter Hagen beats former champion Jim Barnes of England 3 & 2; Hagan's third major title
- Oct 2 New York Yankees outfielder Babe Ruth hits then record 59th HR in 7-6 win over former club Boston Red Sox at Polo Grounds, NYC
- Oct 2 Chicago White Sox backstop Ray Schalk becomes the first and only MLB catcher to make a putout at all bases; White Sox beat Indians 7-4
- Oct 5 First Baseball World Series radio broadcast; all-NY contest, Yankees beat Giants, 3-0 at Polo Grounds; sportswriter Grantland Rice is the caller
- Oct 6 Fewest hits in World Series Game, 5, Yanks (3) beat Giants (2), 3-0
- Oct 9 Babe Ruth's 1st WS homer; only Sunday game ever pitched by Carl Mays
- Oct 10 NFL Decatur Staleys become Chicago Staleys, win 14-10
- Oct 13 NY Giants beat NY Yankees, 5 games to 3 in 18th World Series
- Oct 16 Babe Ruth, Bob Meusel, & Bill Piercy defy Landis ban on World Series
- Oct 16 Jim Conzelman takes over as coach of Rock Island Independents from Frank Coughlin-only mid-game coaching change in NFL history
- Oct 23 Green Bay Packers play 1st APFA (forerunner to NFL) game; beat Minneapolis Marines, 7-6 at Hagemeister Park, Green Bay, WI
- Oct 31 Federation Sportive Feminine International forms (1st woman track & field association)
- Dec 3 CFL Grey Cup, Varsity Stadium, Toronto: Toronto Argonauts win 2nd Championship; beat Edmonton Eskimos, 23-0
- Dec 4 American Professional Football Association Championship, Cubs Park, Chicago: Chicago Staleys beat Buffalo All-Americans, 10-7 in de facto championship game after teams tied in standings
Event of Interest
Dec 20 AL votes to return to best-of-7 World Series, while NL votes best-of-9 Judge Kenesaw Mountain Landis casts deciding vote for best-of-7
Kenesaw Mountain Landis
- Dec 24 Ottawa’s Harry Broadbent scores in 10-0 Senators blowout of the Montreal Canadiens; first in 16-game NHL record goal-scoring streak; Charlie Simmer’s 13 game streak (1979) is considered modern-day record
- Dec 31 Australasian Championships Men's Tennis, Perth: Australian Rhys Gemmell beats countryman Alf Hedeman 7-5, 6-1, 6-4