1910 in sports

St. Kilda achieves the worst start by a team that did not suffer a winless season, losing its first seventeen games before a huge upset over Carlton. This has been equalled only by Fremantle in 2001 and Template:AFL GWS in 2013.
Collingwood wins the 14th VFL premiership, defeating Carlton 9.7 (61) to 6.11 (47) at Melbourne Cricket Ground (MCG)

Bandy

Sweden

Championship final – IFK Uppsala 2–0 IFK Stockholm

Baseball

World Series

17–23 October — Philadelphia Athletics (AL) defeats Chicago Cubs (NL) to win the 1910 World Series by 4 games to 1

Boxing

Events

22 February — Ad Wolgast outlasts Battling Nelson at Point Richmond, California, to win the World Lightweight Championship by a technical knockout after 40 rounds.
4 July — in boxing's first "fight of the century", Jack Johnson knocks out the "great white hope" James J. Jeffries in round 15 to retain his World Heavyweight Championship title.
15 October — World Middleweight Champion Stanley Ketchel is shot and killed at Conway, Missouri, by Walter Dipley, a jealous farm worker. Ketchel is rated by many boxing historians as the best middleweight ever. The title remains vacant until 1913.

Lineal world champions<ref>Cyber Boxing Zone</ref>

World Heavyweight Championship – Jack Johnson
World Light Heavyweight Championship – vacant
World Middleweight Championship – Stanley Ketchel → vacant
World Welterweight Championship – vacant
World Lightweight Championship – Battling Nelson → Ad Wolgast
World Featherweight Championship – Abe Attell
World Bantamweight Championship – Monte Attell

Canadian football

The Saskatchewan Rugby Football Union adopts CRU rules
Interprovincial Rugby Football Union - Hamilton Tigers
Ontario Rugby Football Union - Toronto Athletic Club
Manitoba Rugby Football Union - Winnipeg Rowing Club
Intercollegiate Rugby Football Union - University of Toronto
Saskatchewan Rugby Football Union - Moose Jaw
Calgary defeats Edmonton to win the Alberta Rugby Football League
2nd Grey Cup – University of Toronto defeats Hamilton 16-7

Cricket

England

County Championship – Kent
Minor Counties Championship – Norfolk
Most runs – Johnny Tyldesley 2265 @ 46.22 (HS 158)
Most wickets – Razor Smith 247 @ 13.05 (BB 8–13)
Wisden Cricketers of the Year – Harry Foster, Alfred Hartley, Charlie Llewellyn, Razor Smith, Frank Woolley

Australia

Sheffield Shield – South Australia
Most runs – Bert Kortlang 656 @ 131.20 (HS 197)
Most wickets – Jack Saunders 49 @ 17.32 (BB 6–35)

India

Bombay Triangular – Europeans shared with Parsees

New Zealand

Plunket Shield – Auckland

South Africa

Currie Cup – not contested

West Indies

Inter-Colonial Tournament – Trinidad and Tobago

Cycling

Tour de France

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Figure skating

World Figure Skating Championships

World Men's Champion – Ulrich Salchow (Sweden)
World Women's Champion – Lily Kronberger (Hungary)
World Pairs Champions – Anna Hübler and Heinrich Burger (Germany)

Golf

Major tournaments

British Open – James Braid<ref>{{#invoke:citation/CS1|citation

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US Open – Alex Smith

Other tournaments

British Amateur – John Ball
US Amateur – William C. Fownes Jr.

Horse racing

England

Grand National – Jenkinstown
1,000 Guineas Stakes – Winkipop
2,000 Guineas Stakes – Neil Gow
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The Oaks – Rosedrop
St. Leger Stakes – Swynford

Australia

Melbourne Cup – Comedy King

Canada

King's Plate – Parmer

Ireland

Irish Grand National – Oniche
Irish Derby Stakes – Aviator

USA

Kentucky Derby – Donau
Preakness Stakes – Layminster
Belmont Stakes – Sweep

Ice hockey

Stanley Cup

15 March — Montreal Wanderers wins the NHA championship and the Stanley Cup. The club then defeats Berlin Dutchmen in a challenge.

Events

5 January — National Hockey Association (NHA) commences its inaugural season
15 January — Canadian Hockey Association disbands. Ottawa and Montreal Shamrocks join the NHA.
March — Toronto St. Michael's Majors wins the Allan Cup
December — NHA loses its Cobalt and Haileybury teams, but gains a Quebec team. The Montreal Canadiens are taken over by George Kennedy's Club Athletique Canadien after threatening legal action.

Motorsport

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Rowing

The Boat Race

23 March — Oxford wins the 67th Oxford and Cambridge Boat Race

Rugby league

England

Championship – Oldham
Challenge Cup final – Leeds 26–12 Hull F.C. at Fartown Ground, Huddersfield (replay, following 7–7 draw at Fartown)
Lancashire League Championship – Oldham
Yorkshire League Championship – Wakefield Trinity
Lancashire County Cup – Wigan 22–5 Leigh
Yorkshire County Cup – Huddersfield 21–0 Batley

Australia

1910 Great Britain Lions tour
17 September — the 1910 NSWRFL season culminates in a grand final between South Sydney and Newtown which is drawn 4–4. Newtown are crowned premiers by virtue of being minor premiers.