Jan. 9: Clemson comes back from a 14-0 deficit to beat Alabama 35-31 on a last-second touchdown to win the College Football Playoff National Championship. With the victory, the Tigers avenged their loss to the Crimson Tide in the 2016 title game.
Jan. 12: San Diego Chargers chairman Dean Spanos announces the NFL team is exercising its option to move to Los Angeles after 56 seasons in San Diego.
Jan. 28: Serena Williams beats older sister Venus in the Australian Open final to claim her 23rd Grand Slam singles title. It was later revealed that Serena was 10 weeks pregnant at the time.
Jan. 29: Roger Federer beats Rafael Nadal in a five-set final at the Australian Open to win the 18th Grand Slam singles title of his career.
Feb. 5: After trailing the Atlanta Falcons 28-3 in the first half of Super Bowl LI, Tom Brady and the New England Patriots score 25 unanswered points to force overtime before winning 34-28 on a 2-yard touchdown run by James White. In winning his fifth title for the Patriots, Brady earned his fourth Super Bowl MVP award.
Feb. 26: In his 17th try, including three runner-up finishes, Kurt Busch wins his first Daytona 500 on the last lap of the race.
March 16: Steve Penny resigns as president and CEO of USA Gymnastics amid a sexual abuse scandal that includes revelations by some of the sport's biggest stars that they were victims of Dr. Larry Nassar, a former volunteer physician. Nassar pleaded guilty in November to seven counts of first-degree criminal sexual conduct and will be sentenced in January.
March 27: NFL owners vote 31-1 to approve the Oakland Raiders' move to Las Vegas. The team will play in a new stadium to open near the Las Vegas Strip in time for the 2020 season.
March 31: In possibly the biggest upset in women's basketball history, Mississippi State ends UConn's 111-game winning streak with an overtime buzzer beater to win 66-64 in the national semifinals. UConn had won the last four national championships. Mississippi State would lose the national title game 67-55 to South Carolina two nights later.
April 3: North Carolina beats Gonzaga 71-65 to win the NCAA Division I Men's Basketball Tournament. It was the sixth title in Tar Heels' history.
April 9: Sergio Garcia wins the Masters to claim the first major title of his career.
April 19: Former NFL star Aaron Hernandez, 27, hangs himself in his prison cell. He was serving a life sentence for the June 2013 murder of Odin Lloyd, a semipro football player who was dating the sister of his fiancee. Earlier in the month, Hernandez had been found not guilty in the July 2012 deaths of two men who were killed in a drive-by shooting outside a Boston nightclub.
May 28: Japanese driver Takuma Sato becomes the first Asian driver to win the Indianapolis 500.
June 11: The Pittsburgh Penguins beat the Nashville Predators 2-0 in Game 6 to repeat as Stanley Cup champions. Sidney Crosby also won his second-straight Conn Smythe Trophy as the MVP of the playoffs.
June 11: Rafael Nadal beats Stan Wawrinka in straight sets to win the French Open. The victory was his 10th French Open title and 15th Grand Slam title overall, making him the only man ever to win 10 singles titles at the same Grand Slam event.
June 12: New addition Kevin Durant leads the Golden State Warriors to a 129-120 Game 5 victory over the Cleveland Cavaliers to win the NBA Finals. Durant was named Finals MVP. This was the third straight year the two teams met in the Finals, with the Warriors winning in 2015 and the Cavs winning in 2016.
July 16: Roger Federer beats Marin Cilic in straight sets to win the Wimbledon men's singles title. The victory marked Federer's unprecedented eighth Wimbledon title and 19th overall Grand Slam men's singles title.
Aug. 12: A week after finishing third in his final 100-meter race, Usain Bolt closes out his record-breaking career by tearing his hamstring in the final leg of the 4x100 meter relay at the world track and field championships.
Aug. 11: The NFL announces that Dallas Cowboys running back Ezekiel Elliott had been suspended six games following a year-long investigation into domestic violence allegations raised by his ex-girlfriend. Elliott and the NFLPA appealed the suspension and fought it in the courts before giving up the fight on Nov. 15.
Aug. 26: Following weeks of buildup and hype, Floyd Mayweather beats mixed-martial arts fighter Conor McGregor with a 10th-round TKO.
Sept. 10: Rafael Nadal claims his second Grand Slam title of the year, beating Kevin Anderson in straight sets to win his third US Open title. The victory was the 16th Grand Slam singles title of Nadal's career, who earlier in the season claimed his 10th French Open title.
Sept. 14: The Cleveland Indians 22-game winning streak comes to an end. The streak was the longest in American League history and the second longest in MLB history.
Sept. 15: Houston Texans defensive end J.J. Watt releases the final figures for his Hurricane Harvey relief fund, announcing on his website that the effort, which started with a $200,000 goal, had ultimately raised more than $37 million.
Sept. 20: Boxer Jake LaMotta, whose life was depicted by Robert De Niro in the film "Raging Bull," dies at the age of 95. LaMotta, nicknamed the "Bronx Bull," fought to a record of 83-19-4 with 30 knockouts during his career from 1941 to 1954.
Sept. 23: More than a year after Colin Kaepernick started his protest of police brutality and social justice issues by first sitting and then kneeling during the national anthem, President Donald Trump escalates the situation with a tweet calling on team owners to suspend players who "disrespect our Great American Flag (or Country) by refusing to stand for the national anthem." The following day, Trump called on fans to boycott NFL games if players weren't suspended or fired. In response, players from 17 teams either knelt or locked arms during the national anthem that Sunday.
Oct. 1: After being granted parole in July, O.J. Simpson is released from prison after serving nine years of a 33-year sentence for a Las Vegas kidnapping and armed robbery.
Oct. 10: Needing at least a tie to qualify for the 2018 World Cup, the U.S. men's national soccer team loses 2-1 to Trinidad and Tobago. It was the first time the U.S. failed to qualify for a World Cup since 1986.
Oct. 16: Louisville fires men's basketball coach Rick Pitino in the wake of an FBI investigation into fraud and corruption in college basketball. The wider investigation was first made public when the FBI announced on Sept. 26 that 10 men, including four assistant coaches and a top Adidas executive, had been charged with crimes relating to the investigation.
Nov. 1: The Houston Astros beat the Los Angeles Dodgers 5-1 in Game 7 to win the franchise's first World Series title. Astros outfielder George Spring was named MVP after hitting five home runs in the series to tie a World Series record.
Nov. 7: Pitcher Roy Halladay, who won two Cy Young Awards and more than 200 Major League Baseball games during a stellar career, dies in a plane crash off the Florida coast. Halladay, 40, was the only person on the two-seater plane that crashed just off New Port Richey on the Gulf coast north of the Tampa Bay area.
Nov. 19: Martin Truex Jr. wins his first NASCAR Cup Series title by winning the Ford EcoBoost 400 at Homestead-Miami Speedway. He beat out former champions Kyle Busch, Kevin Harvick and Brad Keselowski to win the newly renamed Monster Energy NASCAR Cup Series title.
Dec.3: Playing in his first tournament in nearly a year, Tiger Woods returns from his fourth back surgery to posted three sub-70 rounds at the Hero World Challenge in the Bahamas to finish in a tie for ninth place in the 18-man field.
Dec. 5: The International Olympic Committee bans Russia from the 2018 Winter Olympics in South Korea over the country's "systemic manipulation" of anti-doping rules. However, Russian athletes who can prove that they are clean will be "invited" to compete in Pyeongchang, the IOC ruled.