Baseball

• World Series - Chicago Cubs defeat Detroit Tigers, 4 games to 0 with one tie

Minor leagues

• The Winnipeg Maroons win the Northern League Championship

Football (Australian rules football)

• Victorian Football League
• Carlton wins the 11th VFL Premiership (Carlton 6.14 (50) d South Melbourne 6.9 (45))
• See also Victorian Football League season 1907

Football (soccer)

England

• First Division - Newcastle United win the 1906-07 title.
• FA Cup - The Wednesday beat Everton 2-1.

Turkey

• The biggest club in Turkish Soccer History, Fenerbahce SK, was established.

Golf

• June 18-21 - British Open - Arnaud Massy became the first overseas champion, he was from France.
• June 19-21 - U.S. Open - Alec Ross
• British Amateur - John Ball
• U.S. Amateur - Jerome Travers

Horse racing

• May 6 - Pink Star wins the Kentucky Derby

Ice hockey

• January 17–21 - Kenora Thistles defeat the Montreal Wanderers 2 games to 0 in a Stanley Cup challenge to win the Stanley Cup. Kenora would be the smallest town to ever win the Stanley Cup.
• March 9 - The Wanderers win the Eastern Canada Amateur Hockey Association (ECAHA) title and challenge Kenora to a rematch.
• March 16-18 - The Thistles defeat Brandon, Manitoba to win the Manitoba title and defend the Stanley Cup. As the ECAHA season was over, the Thistles added Alf Smith and Rat Westwick from the Ottawa Hockey Club.
• March 23–25 - The Wanderers regain the Cup by defeating the Thistles 2 games to 0 in a rematch. The Thistles continued to use the Ottawa players and caused a protest to the Stanley Cup trustees, but the Wanderers won the series anyway.

Tennis

• Norman Brookes of Australia becomes the first international Wimbledon Men's Singles champion.

Births

• January 15 — Janusz Kusociński, Polish athlete (d. 1940)
• February 11 — E W Swanton, British author and sports commentator (d. 2000)
• February 14 — Johnny Longden, Hall of Fame jockey (d. 2003)
• February 17 — Buster Crabbe, American swimming champion and actor (d. 1983)
• March 13 — Jack Holden, English long-distance runner (d. 2004)
• April 2 — Luke Appling, American baseball player (d. 1991)
• May 16 — Bob Tisdall, Irish hurdler (d. 2004)
• August 11 — Bobo Newsom, American baseball player (d. 1962)
• September 6 — Johnny Kelley, American long-distance runner (d. 2004)
• September 8 — Jean Aerts, Belgian road bicycle racer (d. 1992)
• September 12 — Spud Chandler, American baseball player (d. 1990)
• September 26 — Bep van Klaveren, Dutch boxer (d. 1992)
• September 28 — Heikki Savolainen, Finnish gymnast (d. 1997)
• October 22 — Jimmie Foxx, American Hall of Fame baseball player (d. 1967)
• November 19 — Luigi Beccali, Italian athlete (d. 1990)
• November 27 — Eric Brook, English footballer (d. 1965)
• December 19 — Jimmy McLarnin, Canadian two-time world champion boxer (d. 2004)

Deaths

• February 26 - C. W. Alcock, British footballer, journalist, and football promoter (b. 1842)
• June 23 - Hod Stuart, Canadian ice hockey player and member of Stanley Cup champion Montreal Wanderers, dies in a swimming accident.