December 16 - The Miami Dolphins defeat the Baltimore Ravens 22–16 in overtime to claim their only win of the 2007 NFL season. With the Dolphins losing their final two games, they would've suffered an Imperfect season if not for that overtime victory, a year before the Detroit Lions became the first winless team since the NFL expanded to a 16-game schedule.
December 29 - The New England Patriots became the second team after the 1972 Miami Dolphins to win all their regular season games after defeating the New York Giants38-35 (16-0). They would win 2 playoff games and enter Super Bowl XLII at 18–0. However, the Patriots could not complete what could have been a historic 19–0 season. The Giants upset the Patriots 17–14.
September 9 – sprinterAsafa Powell of Jamaica breaks the previous record set by himself at the 100 metres sprint (9.77 seconds) and sets a new world record of 9.74
September 30 – Haile Gebrselassie of Ethiopia sets new world marathon record time of 2:04:26 at Berlin
The Phoenix Mercury would stun the 2006 WNBA Champion Detroit Shock in 5 games to capture their first title in franchise history. It was the second year in a row that a defending champion was stunned by another team who wasn't in the finals that previous year.
January 20 Nicolay Valuev successfully defends his WBA Heavyweight title by defeating Jameel McCline, by technical knockout aun McCline blows out his knee.
February 3 Chad Dawson becomes the WBC Light Heavyweight champion after defeating Tomasz Adamek by unanimous decision. Despite being knocked down from a straight right hand on round ten, Dawson dominates most of the fight with his speed.
February 10 Shane Mosley becomes the WBC Welterweight champion by defeating Luis Collazo by unanimous decision.
March 10 Wladimir Klitschko successfully defends his IBF Heavyweight title after defeating Ray Austin by 2nd-round knockout.
April 14 Ruslan Chagaev becomes the new WBA Heavyweight Champion after defeating Nicolay Valuev by majority decision.
April 28 Juan Díaz unifies the WBA and WBO Lightweight titles after defeating Acelino Freitas, after Freitas refused to answer the bell before round nine.
September 29 Kelly Pavlik upsets Jermain Taylor by seventh-round TKO to win the WBC, WBO, and universally recognized Middleweight Champion of the World. Pavlik was knocked down in the second round, but rallied back against a tired Taylor.
November 4 Joe Calzaghe defeats Mikkel Kessler by unanimous decision in a unification bout for the WBA, WBC and WBO super middleweight titles. Calzaghe becomes the first undisputed super middleweight champion and surpasses the 20 defences made by Bernard Hopkins and Larry Holmes at middleweight and heavyweight respectively.
The Ashes – Australia completes a 5–0 whitewash over England in the 2006-07 Ashes series, the first time since 1920–21 that one team has won all the Tests in an Ashes series
May 8 – The International Ice Hockey Federation announces that it will formalize the Triple Gold Club, previously a media-created term that grouped individuals who have won the Stanley Cup along with gold medals at the Olympics and World Championships. At the time of announcement, the club consisted of 18 members.
November 17 at Paris – 2007 All Golds Tour, a repeat of the first ever international rugby league tour 100 years before, ends with a New Zealand win against France.
2007 Rugby World Cup held in stadiums throughout France, with matches also held in Edinburgh and Cardiff. South Africa beat defending champions England in the final 15–6 to win the World Cup.
2007 Super 14Final at ABSA Stadium, Durban – The Bulls score a converted try after the final horn to defeat the homestanding Sharks 20–19, becoming the first South African team to win the Super Rugby competition in its professional era.
