Golf
850 player photos, all from Wikimedia Commons. Surnames starting with O:
Sean O'Hair
Photo: Sean_O'Hair_2008_Open_Championship.jpg: SN#1 @ Flickr derivative work: Austin512 (talk) · CC BY 2.0 · Wikimedia Commons
Peter O'Malley
Photo: Pvt pauline · CC BY-SA 3.0 · Wikimedia Commons
Mark O'Meara
Photo: PaddyBriggs at English Wikipedia · Public domain · Wikimedia Commons
Ryann O'Toole
Photo: Keith Allison from Hanover, MD, USA · CC BY-SA 2.0 · Wikimedia Commons
Pete Oakley
Photo: Pvt pauline · CC BY-SA 3.0 · Wikimedia Commons
Lorena Ochoa
Photo: Roman Gomez · CC BY-SA 2.0 · Wikimedia Commons
Willie Ogg
Photo: Unknown author, original photo property of the Library of Congress · Public domain · Wikimedia Commons
Geoff Ogilvy
Photo: Justin Falconer from Melbourne, Australia · CC BY 2.0 · Wikimedia Commons
Brett Ogle
Photo: Pvt pauline · CC BY-SA 3.0 · Wikimedia Commons
Ayako Okamoto
Photo: 江戸村のとくぞう · CC BY-SA 4.0 · Wikimedia Commons
José María Olazábal
Photo: Bryan Berlin · CC BY-SA 4.0 · Wikimedia Commons
Andrew Oldcorn
Photo: Pvt pauline · CC BY-SA 3.0 · Wikimedia Commons
Thorbjørn Olesen
Photo: Alemarcoli at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons
Ed Oliver
Photo: Unknown author · Public domain · Wikimedia Commons
Louis Oosthuizen
Photo: B Wendell Jones · CC BY-SA 2.0 · Wikimedia Commons
Wade Ormsby
Photo: Pvt pauline · CC BY-SA 3.0 · Wikimedia Commons
Gary Orr
Photo: Pvt pauline · CC BY-SA 3.0 · Wikimedia Commons
Adrián Otaegui
Photo: Shot Clock Masters · CC0 · Wikimedia Commons
Hennie Otto
Photo: Pvt pauline · CC BY-SA 3.0 · Wikimedia Commons
Francis Ouimet
Photo: The original uploader was Richard Arthur Norton (1958- ) at English Wikipedia. · Public domain · Wikimedia Commons
Greg Owen
Photo: Carl Lindberg · CC BY 2.5 · Wikimedia Commons
Simon Owen
Photo: Pvt pauline · CC BY-SA 3.0 · Wikimedia Commons