- Jan 9 Baseball's National & American Leagues make peace
- Jan 9 Frank Farrell and Bill Devery purchase the American League's Baltimore baseball franchise for $18,000 and move it to NYC (later the NY Yankees)
- Jan 19 French newspaper L'Auto announces new 5-stage, long distance bicycle race, "Tour de France"
- Feb 4 Stanley Cup: Montreal HC beats Winnipeg Victorias, 4-1 for a 2-1 challenge series win
- Feb 7 VVV '03 soccer club is established in the Dutch southeastern city of Venlo
- Feb 28 Barney Dreyfuss & James Potter buy Philadelphia Phillies for $170,000
- Mar 1 Major League Baseball Rules Committee rule that pitcher's mound must not be more than 15 inches higher than the baselines or home plate
- Mar 4 Stanley Cup, Montreal Arena, Westmount, Quebec: Montreal HC beats Winnipeg Victorias, 4-1 for a 2-1 challenge series victory
- Mar 12 New York Highlanders (Yankees) baseball franchise is approved as a member of the American League
- Mar 14 Stanley Cup, Dey's Arena, Ottawa, Ontario: Ottawa HC beats Rat Portage Thisles, 4-2 for a 2-0 challenge series sweep
- Mar 27 65th Grand National: Percy Woodland aboard 13/2 chance Drumcree wins by 3 lengths from Detail
- Apr 20 7th Boston Marathon won by Irishman John Lorden in 2:41:29.8
- Apr 22 NY Highlanders (Yankees) first MLB game; lose 3-1 before 11,950 vs Washington Senators at American League Park
- Apr 23 NY Highlanders (Yankees) win their first game; beat Washington Senators, 7-2 at American League Park
- Apr 27 1st Highlander (Yankee) shut-out, Philadelphia A's win 6-0
- Apr 30 NY Highlanders (Yankees) inaugural home opener at Hilltop Park, Manhattan; beat Washington Senators, 6-2
- May 2 29th Kentucky Derby: Hal Booker riding Judge Himes wins in 2:09
- May 3 AVC Heracles (SC Heracles '74) soccer team forms in Almelo
- May 6 Chicago White Sox commit 11 errors against Detroit Tigers but win 10-9 at South Side Park. Chicago
- May 17 Cleveland Indians beat NY Highlanders 9-2 in Columbus Ohio
- May 27 37th Belmont: John Bullman aboard Africander wins in 2:21.75
- May 30 28th Preakness: W Gannon aboard Flocarline wins in 1:44.8
43rd British Men's Open
Jun 11 British Open Men's Golf, Prestwick GC: Harry Vardon wins his 4th Open title by 6 strokes from younger brother Tom Vardon
- Jun 16 1st Highlander (Yankee) shut-out victory 1-0 over White Sox
- Jun 25 Boston Beaneater Wiley Piatt is only 20th-century pitcher to lose 2 complete games in one day, falling to Pittsburgh 1-0 & 5-3
- Jun 25 NY Yanks & Chicago White Sox end deadlocked game at 6-6 in 18
- Jun 27 US National Championship Women's Tennis, Philadelphia CC: Elisabeth Moore beats Marion Jones 7-5, 8-6 for her third of 4 US singles titles
- Jun 29 US Open Men's Golf, Baltusrol GC: Willie Anderson of Scotland first to win the Open twice; beats countryman David Brown by 2 strokes in an 18-hole playoff
Wimbledon Men's Championship
Jun 30 Wimbledon Men's Tennis: Laurence Doherty beats Frank Riseley 7-5, 6-3, 6-0 for his second consecutive title
- Jun 30 Wimbledon Women's Tennis: Dorothea Chambers beats Ethel Larcombe 4-6, 6-4, 6-2, the first of 7 titles
- Jul 1 Tour de France: Inaugural race begins in Montgeron, a south-eastern suburb of Paris
- Jul 2 National League MLB batting champion Ed Delahanty, disappears after being removed intoxicated from a train by force; found dead at bottom of Niagara Falls 2 weeks later
- Jul 2 Pitcher Jack Doscher, debuts for the Chicago Cubs, the first son of a major leaguer to play MLB, father Herm 1882-92
- Jul 19 1st Tour de France: French rider Maurice Garin wins inaugural event
- Aug 7 Tommy Corcoran sets MLB record for shortstops when he records 14 assists in Cincinnati's 4 - 2 win v St. Louis Cardinals
- Aug 8 International Lawn Tennis Challenge, Boston, MA: Laurence Doherty beats William Larned 6-3, 6-8, 6-0, 2-6, 7-5 to give British Isles an unassailable 3-1 lead over US (ends 4-1)
Jeffries TKOs Corbett
Aug 14 Champion James J. Jeffries scores a 10th round TKO win over former champion James J. Corbett in San Francisco; his 6th heavyweight boxing title defense
- Aug 15 New Zealand's All Blacks play their first Rugby Test Match against Australia's Wallabies at the Sydney Cricket Ground; New Zealand win 22-3
- Aug 19 Philadelphia Phillies suffer record 9th straight postponed game
- Aug 26 Phillies walk 17 Dodgers in a game
- Aug 26 US National Championship Men's Tennis, Newport, RI: Englishman Laurence Doherty beats American defending champion William Larned 6-0, 6-3, 10-8; first non-American champion
- Aug 31 New York Giants future Baseball Hall of Fame pitcher Joe McGinnity wins his 3rd doubleheader of month, beating the Philadelphia Phillies, 4-1 and 9-2 at the Polo Grounds
- Sep 3 American yacht Reliance (largest gaff-rigged cutter ever built) defends America's Cup for the NYYC beating UK challenger Shamrock III off the New Jersey shore for a 3-0 series win
- Sep 7 Federation of American Motorcyclists organized in NY
- Sep 18 Phillies' Chick Fraser no-hits Chicago Cubs, 10-0
- Sep 24 Bill Bradley becomes 1st Cleveland baseball player (Cleveland Naps) to hit for cycle
- Oct 13 1st Baseball World Series: Boston Americans beat Pittsburgh Pirates, 3-0 in Game 8 at Huntington Avenue for a 5-3 series victory
- Oct 23 8th Iron Bowl: Alabama beats Auburn 18-6 in Montgomery
- Dec 14 England cricket batsman R. E. Foster completes 287 on debut in 1st Test against Australia at the Sydney Cricket Ground
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