OLYMPICS

RIO DE JANEIRO (AP) The IOC approved the entry of 271 Russian athletes for the Rio de Janeiro Olympics, meaning 70 percent of the country's original team will compete after a doping scandal that has dominated the buildup to the games.

The IOC rule barring Russian athletes with prior doping sanctions from competing in the games was also rejected as ''unenforceable'' by a sports arbitration panel, a decision which could open the door to further appeals and more Russians being entered.

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The International Olympic Committee announced the go-ahead for 271 Russian athletes about 24 hours before the opening ceremony of the games. Overall, more than 100 Russians have been excluded, including 67 in track and field.

RIO DE JANEIRO (AP) - One of the lead investigators into the Russian doping crisis accused the World Anti-Doping Agency of contributing to the chaos ahead of the Olympics by not pushing for a probe into the country's entire sports system at an earlier date.

Jack Robertson, the chief investigator for the probe of Russia's track team, told Pro Publica that WADA president Craig Reedie ''had to be literally pressured into every investigation.''

Reedie responded by telling The Associated Press that Robertson, who left WADA under pressure in January, is ''clearly a disaffected former employee.''

NBA

OKLAHOMA CITY (AP) - A month after Kevin Durant bolted for Golden State, star guard Russell Westbrook signed a contract extension to stay in Oklahoma City.

The team confirmed Westbrook signed the extension. A person with direct knowledge of the terms said the two sides agreed on a new three-year deal worth $85.7 million. The person spoke to The Associated Press on condition of anonymity because the team did not release terms.

After the announcement, the team feted Westbrook during an event that was part pep rally and part press conference.

NFL

MINNEAPOLIS (AP) - NFL Commissioner Roger Goodell's power to freely punish Adrian Peterson has prevailed, two seasons after the Minnesota running back became embroiled in a child-abuse case that heightened the dispute over league discipline.

A three-judge panel of the 8th U.S. Circuit Court of Appeals ruled that an NFL arbitrator acted within his rights by upholding Goodell's six-game suspension of Peterson in 2014. That came under the personal conduct policy the league toughened up following a brutal act of caught-on-video domestic violence committed by Baltimore running back Ray Rice.

GOLF

CROMWELL, Conn. (AP) - Jerry Kelly played off the emotion of what he considers a home crowd Thursday in the Travelers Championship, shooting a 6-under 64 for a share of the first-round lead with Vaughn Taylor and Andrew Loupe.

The 49-year-old Kelly, who played at the nearby University of Hartford, started his afternoon on the back nine at TPC River Highlands, sinking a 45-foot putt for eagle on his sixth hole of the day, the course's signature par-4 15th.

Taylor, the 40-year-old who won for the first time since 2005 at Pebble Beach this year, strung together five consecutive birdies starting on the 12th hole and shot a 30 on the back nine.

Loupe, who at 27 is looking for his first PGA Tour win, had seven birdies and a bogey on the day. He pulled into a tie for the lead after a 128-yard approach shot on 18 gave him a 2-foot birdie putt.

Jon Rahm, the 21-year-old Spaniard who turned pro in June, eagled the par-5 13th hole and was a stroke back along with Ben Martin and Marc Leishman.NBA

NORTH BERWICK, Scotland (AP) - Englishmen Chris Wood and Matt Fitzpatrick won their first-round matches in the Paul Lawrie Match Play as they look to lock up their first Europe's Ryder Cup spots.

Wood beat Australia's Brett Rumford 4 and 3, and Fitzpatrick raced to a 6-up lead after nine holes before closing out Denmark's Thomas Bjorn 4 and 3.

Wood is the top-seeded player at Archerfield and, like Fitzpatrick, currently occupies a spot on the European team for the Ryder Cup at Hazeltine next month in Minnesota. Tournament host Paul Lawrie also advanced to the last 32, beating Denmark's Lucas Bjerregaard 4 and 2.

U.S. WOMEN'S AMATEUR

SPRINGFIELD, Pa. (AP) - South Korea's Eun Jeong Seong and Italy's Virginia Elena Carta each won two matches in the U.S. Women's Amateur to keep alive their bids for rare season sweeps.

The 16-year-old Seong is trying to become the first player to win the event and U.S. Girls' Junior in the same season, and the 19-year-old Carta is attempting to become the second player to win the tournament and NCAA individual title in the same year.

Seong beat Thailand's Chakansim (Fai) Khamborn 5 and 4 in the morning in the round of 32 at Rolling Green, and topped fellow South Korean player Hye-Jin Choi 6 and 5 in the afternoon round of 16.

AUTO RACING

DENVER (AP) - Martin Truex Jr. has signed a two-year contract extension with Furniture Row Racing, keeping him with his NASCAR team through the 2018 season.

The Denver-based operation also announced that Bass Pro Shops and Tracker Boats will increase their primary sponsorship on the No. 78 Toyota from 12 to 16 races in 2017. The outdoorsman giants served as Truex's primary sponsors for his back-to-back Xfinity Series championships (2004-05) and the first three years of his Sprint Cup career (2006-08).

They were reunited this season.

TENNIS

ATLANTA (AP) - Second-seeded Nick Kyrgios of Australia advanced to the BB&T Atlanta Open quarterfinals, beating American Jared Donaldson 7-6 (4), 6-3 in a rain-interrupted match.

Kyrgios won an indoor event in Marseille, France, in February for his lone tour title. He will face fifth-seeded Fernando Verdasco of Spain, a 6-1, 6-3 winner over France's Julien Benneteau.

Japan's Yoshihito Nishioka and Argentina's Horacio Zeballos set up a quarterfinal in the day session.