David Berkoff

David "Dave" Charles Berkoff is an American former competition Hall of Fame swimmer, Olympic champion, and former world record-holder in two events. Berkoff was a backstroke specialist who won a total of four medals during his career at the Olympic Games in 1988 and 1992. He is best known for breaking the world record for the 100-meter backstroke three times, beginning at the 1988 Olympic trial preliminaries, becoming the first swimmer to go under 55 seconds for the event. He is also remembered for his powerful underwater backstroke start, the eponymous "Berkoff Blastoff" which after a strong push-off from the side of the pool used a horizontal body position with locked arms outstretched overhead and an undulating or wavelike aerodynamic dolphin kick to provide thrust and build speed.

30 November 1966

Born on the same birth date (30 November 1966): David Nicholls (writer) • John Bishop • Mika Salo • Nigel Adams • Philippe Bozon

Born on the same birth day (30 November): Andrés Henestrosa • Andy Gray (footballer, born 1955) • Ben Thatcher • Bill Walsh (American football coach) • Christel Khalil • Count Franz Philipp von Lamberg • Harry Altham • Henry Savile (Bible translator) • Henry Taube • Ian Morris (athlete) • Jean Eustache • Joe B. Hall • John McCrae • Laurent Jalabert • Louis-Sébastien Le Nain de Tillemont • Mark Twain • Maryon Pittman Allen • Phillip Hughes • Steve Aoki • Teresa Gisbert • Terrence Malick

Born in the same month (November 1966): Ben Allison • Billy Burke (actor) • Calvin Borel • Christian Lorenz • Curt Schilling • Gordon Ramsay • Joey Cape • Kakhaber Kacharava • Kevin Gilbert (musician) • Mary Hansen • Mika Salo • Nayim • Peaches (musician) • Philippe Bozon • Urmas Kirs