July 4

1910 — Jack Johnson knocks out Jim Jeffries in the 15th round at Reno, Nev., to retain the world heavyweight title and spoil Jeffries' comeback.

1914 — The Harvard eight wins the Grand Challenge Cup to become the first American crew to capture the top event at the Henley Royal Regatta.

1919 — Jack Dempsey wins the world heavyweight title at Toledo, Ohio, when Jess Willard fails to answer the bell for the fourth round.

1923 — Jack Dempsey beats Tommy Gibbon in 15 for the heavyweight title. The fight almost bankrupts the town of Shelby, Montana, which borrowed heavily to stage it.

1930 — Helen Wills Moody wins her fourth straight singles title at Wimbledon with a 6-2, 6-2 win over Elizabeth Ryan. Moody would go on to win four more Wimbledon singles titles.

1964 — Maria Bueno of Brazil upsets Margaret Smith of Australia 6-4, 7-9, 6-3 for the women's title at Wimbledon.

1975 — Billie Jean King beats Evonne Goolagong, 6-0, 6-1 for her sixth and final singles title at Wimbledon.

1982 — Jimmy Connors beats John McEnroe 3-6, 6-3, 6-7, 7-6, 6-4 in the longest men's championship match — 4 hours, 16 minutes — at Wimbledon.

1987 — Martina Navratilova wins her eighth Wimbledon singles title and sixth straight, beating Steffi Graf 7-5, 6-3.

1999 — Pete Sampras overwhelms Andre Agassi in three sets to capture his sixth Wimbledon title and tie Roy Emerson's record with his 12th Grand Slam championship. Sampras is the first man in the Open era with six Wimbledon titles.

2002 — Venus and Serena Williams win in straight sets to set up their third title match at a major in 10 months — and the first all-sister Wimbledon final since 1884. Top-seeded Venus, the two-time defending champion, overpowers Justine Henin 6-3, 6-2. Second-seeded Serena routs Amelie Mauresmo 6-2, 6-1 in 55 minutes.

2004 — Meg Mallon wins the Women's U.S. Open with a 6-under 65, the lowest final round by a champion in the 59-year history of the tournament. Mallon finishes at 10-under 274 for a two-shot victory over Annika Sorenstam. Mallon's 13-year gap between Women's Open wins is the longest in history.

2008 — Dara Torres completes her improbable Olympic comeback, making the U.S. team for the fifth time by winning the 100 freestyle at the U.S. Olympic trials in Omaha, Neb. The 41-year-old wins in 54.78. A nine-time medalist, she already was the first U.S. swimmer to make four Olympic teams.