OLYMPICS

RIO DE JANEIRO (AP) Ryan Lochte and three other American swimmers were robbed at gunpoint early Sunday by thieves posing as police officers who stopped their taxi and took their money and belongings.

In the latest security incident to hit the Rio de Janeiro Games, Lochte told NBC that one of the robbers put a gun to his forehead before taking his wallet. No one was injured.

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Lochte and his teammates were returning to the athletes' village by taxi after a night out at the French Olympic team's hospitality house in the Rodrigo de Freitas area in the upscale south zone of the city. The outing was several hours after Olympic swimming ended Saturday night at the Rio Games.

Traveling with Lochte were Gunnar Bentz, Jack Conger and Jimmy Feigen. Lochte swam in two events at the Rio Games, winning gold in the 4x200-meter freestyle relay. He is a 12-time Olympic medalist.

RIO DE JANEIRO (AP) - Goodbye green. It's back to clear water in the pool at the Maria Lenk Aquatics Center, allowing synchronized swimmers to see underwater on the first day of Olympic competition.

Officials completed pumping nearly 1 million gallons of clean water into the pool used for synchro with little time to spare before Sunday's free routine preliminary began. They had raced to drain green-tinged water out of the pool overnight at a venue that has embarrassed local organizers.

The massive undertaking was necessary to ensure clear water for both judges and competitors, who spend much of their time underwater during synchronized swimming.

The water problems had limited the swimmers to just one practice session in the pool when the water was unusually cold.

RIO DE JANEIRO (AP) - Crucial payments to fund the travel of Paralympic teams to Brazil have not been transferred, threatening the participation of some nations, the chief executive of the Paralympic movement said.

The International Paralympic Committee said the payments, which are vital for funding travel and logistics, must be sent to its members next week. The IPC is expecting around 160 countries to participate in the Paralympics but fears withdrawals if the cash isn't received.

The late payments are one of the problems threatening the successful delivery of the Sept. 7-18 Paralympics by the financially-challenged Rio organizers, with sluggish ticket sales also troubling the IPC.

PRO FOOTBALL

ORCHARD PARK, N.Y. (AP) - Ralph Wilson Stadium is entering a New Era.

The Buffalo Bills announced on their Twitter account they reached an agreement to sell the naming rights of their home stadium to Buffalo-based New Era Cap Company.

The team did not provide any further details except to say a news conference will be held next week.

Two people with direct knowledge of the decision told The Associated Press the deal will run over the remainder of the team's seven-year lease. New Era also has the right of first refusal to continue the agreement once the current lease expires in 2022, and also if the Bills elect to build a new facility.

The people spoke on the condition of anonymity because the team and New Era have not disclosed that information.

The people said the agreement was reached about 10 days ago, and after the Bills made a formal presentation to New Era company officials - including company president and CEO Christopher Koch - about six weeks ago.

SPARTANBURG, S.C. (AP) - Carolina Panthers special teams coordinator Bruce DeHaven has decided to step down from his position and move into an advisory role with the team while continuing his battle with prostate cancer.

The team announced that Thomas McGaughey has been promoted to special teams coordinator and Chase Blackburn to special teams assistant.

DeHaven will return to Buffalo, New York, to receive cancer treatments with the hopes of returning to the team as an adviser in mid-September.

The 67-year-old DeHaven was diagnosed with prostate cancer in 2015 before his 29th season as an NFL assistant coach. He previously took a leave of absence in May of 2015, but returned for Carolina's NFC championship season.

Coach Ron Rivera said DeHaven approached him about the decision to leave as coordinator after Thursday night's preseason game against the Baltimore Ravens.

BASEBALL

MIAMI (AP) - Alex Rodriguez may soon get a call from his hometown team.

The Miami Marlins are in the market for a power hitter to replace injured slugger Giancarlo Stanton, and they're discussing whether to reach out to Rodriguez, president of baseball operations Michael Hill.

Stanton strained his groin Saturday and is expected to be sidelined at least six weeks, meaning it's likely he'll miss the rest of the regular season. Rodriguez, who grew up in South Florida and still lives here, played his final game for the New York Yankees on Friday.

Hill said the Marlins will ''look at everything'' but don't know how eager Rodriguez might be to continue playing.

The 41-year-old Rodriguez was unconditionally released Saturday by Yankees and was batting .200.

WASHINGTON (AP) - The Washington Nationals released former closer Jonathan Papelbon.

The move came when the Nationals needed a roster spot to recall right-hander Reynaldo Lopez to start against the Atlanta Braves.

A little over a year after the Nationals acquired him from the Philadelphia Phillies to replace Drew Storen as their closer, Papelbon became a free agent. He can sign with any team.

The six-time All-Star had a tumultuous tenure in Washington that included him grabbing National League MVP Bryce Harper by the throat during a dugout altercation in September. This season, he converted 19 of 22 save opportunities but struggled in July and has a 4.37 ERA.

The 35-year-old right-hander allowed eight runs on seven hits in three outings before the Nationals traded for new closer Mark Melancon.