The New York Yankees will release former MVP Alex Rodriguez from his 10-year, $US275 million contract and he will play his final game with the team on Friday.

The NFL has cleared Peyton Manning of accusations that he had used banned substances, dismissing a news report from seven months ago that suggested that the star quarterback had taken human growth hormone.

Four people were killed in a highway collision with a Dallas Cowboys tour bus Sunday afternoon about 80 kilometres south of Las Vegas, according to multiple reports.

Footage has emerged of Bernard Tomic and fellow tennis star Viktor Troicki being forced off a court by a police officer.

All eyes will be on Ben Simmons when the 76ers open the season in October, which is natural for the NBA's No. 1 overall draft pick.

Denver Broncos outside linebacker and Super Bowl 50 MVP Von Miller became the NFL's highest-paid defensive player after agreeing to a six-year, $US114.5 million ($A150 million) deal.

Philadelphia 76ers head coach Brett Brown has defended Ben Simmons after NBA great Isiah Thomas slammed the Australian teenager for sitting out Summer League games.

Thon Maker's Milwaukee Bucks have had their hopes of winning the NBA Summer League title extinguished, but the 216-centimetre Australian teenager still earned rave reviews.

UFC President Dana White says the mixed martial arts company has been sold for approximately $US4 billion ($A5.28 billion) to a group of investors led by Hollywood talent agency WME-IMG.

World No.1 Lydia Ko has moved a step closer to a third major championship victory by seizing a one-shot lead after the third round of the US Women's Open in San Martin, California.

An arrest has been made in the hit-and-run that killed the cousin of Australian Ben Simmons, the No.1 overall pick by the Philadelphia 76ers in last month's NBA Draft.

Jon Jones has been pulled from the UFC 200 main event after being notified by the US Anti-Doping Agency that he has submitted a positive sample for a banned performance-enhancing substance.

Christian Laettner, a former Duke basketball star whose venture into the business world has left a trail of debt and creditors, could be in bankruptcy court soon if he fails to come up with $14.05 million.

Joey "Jaws" Chestnut beat his own record in Coney Island, regaining the Mustard Yellow International Belt after downing a stomach-churning 70 hot dogs and buns at the annual Fourth of July hot dog eating contest.

The Golden State Warriors are going to be a must-see team next season after signing Kevin Durant. They are also going to be a must-win-the-championship-or-else team. And that is going to be very interesting.

Ben Simmons can expect a baptism of fire when he pulls on a Philadelphia 76ers jersey and leads his team on the court for the first time.

If you are a long-suffering New York Knicks fan who feels a sense of deja boohoo over the amount of money and the years they will soon invest in a 31-year-old centre with a recent history of not-so-minor injuries, lift your spirits by going to YouTube and searching for Joakim Noah and 14 assists.

Boston have finally landed a big fish in NBA free agency with Atlanta Hawks All-Star Al Horford agreeing to a four-yeal deal reportedly worth $113 million.

World No.1 Jason Day has somehow held onto a share of the lead despite hitting just three fairways in the third round of the World Golf Championships Bridgestone Invitational.