Aug. 18

1923 — Helen Mills, 17, ends Molla Bjurstedt Mallory’s domination of the U.S. Lawn Tennis Association championships and starts her own with a 6-2, 6-1 victory.

1958 — Floyd Patterson knocks out Roy Harris in the 13th round at Wrigley Field in Los Angeles to retain his world heavyweight title.

1964 — The International Olympic Committee bans South Africa from competing in the Summer Olympics because of its apartheid policies.

1994 — South Africa is introduced for the first time in 36 years during the opening ceremonies of the 15th Commonwealth Games held in Victoria, British Columbia. South Africa had been banned from the Games since 1958 because of its apartheid policies.

1995 — Thirteen-year-old Dominique Moceanu becomes the youngest to win the National Gymnastics Championships senior women’s all-around title in New Orleans.

2000 — Tiger Woods ties the 36-hole scoring record in the PGA Championship with a 5-under 67 to take a one-stroke lead over unheralded Scott Dunlap. Woods, at 11-under 133, ties the mark for relation to par last set by Mark O’Meara and Ernie Els in 1995.

2004 — Paul Hamm wins the men’s gymnastics all-around Olympic gold medal by the closest margin ever in the event. Controversy follows after it was discovered a scoring error that may have cost Yang Tae-young of South Korea the men’s all-around title. Yang, who finished with a bronze, is wrongly docked a tenth of a point on his second-to-last routine, the parallel bars. He finishes third, 0.049 points behind Hamm, who becomes the first American man to win gymnastics’ biggest prize.

2008 — A day after winning an Olympic gold medal in Beijing, Rafael Nadal officially unseats Roger Federer to become the world’s No. 1 tennis player when the ATP rankings are released. Federer had been atop the rankings for 235 weeks.

2013 — For the first time in Solheim Cup history, the Europeans leaves America with the trophy. Caroline Hedwall becomes the first player in the 23-year history of the event to win all five matches. She finishes with a 1-up victory over Michelle Wie and gives Europe the 14 points it needed to retain the cup.

2013 — Usain Bolt is perfect again with three gold medals. The Jamaican great becomes the most successful athlete in the 30-year history of the world championships. The 4x100-meter relay gold erases the memories of the 100 title he missed out on in South Korea two years ago because of a false start. Bolt, who already won the 100 and 200 meters, gets his second such sprint triple at the world championships, matching the two he achieved at the Olympics. With his victory, Bolt moves to the top of the all-time world championships medals table with eight gold and two silver, edging Carl Lewis, who had eight gold, one silver and one bronze.

2016 — Jamaica’s Usain Bolt completes an unprecedented third consecutive sweep of the 100- and 200-meter sprints, elevating his status as the most decorated male sprinter in Olympic history. He wins the 200-meter race with a time of 19.78 seconds to defeat Andre de Grasse of Canada. He already claimed gold in the 100 in Rio. American Ashton Eaton defends his Olympic decathlon title, equaling the games record with a surge on the last lap of the 1,500 meters — the last event in the two-day competition.

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