Periault and Duffy were running shoulder to shoulder but the Frenchwoman pulled away from the Bermudan on the third lap of the run.
Djokovic saved three breakpoints in stifling conditions to go 5-4 up but lost the opening set in a tough tiebreak as Opelka cranked up his serve
Jamaica's dominance in the women's 100 and 200 metres came to an abrupt end in Paris
Noah Lyles is the new Olympic 100m champion!
Rohan Bopanna and his Australian partner Matthew Ebden have clinched a spot in the prestigious season-ending ATP Finals, marking the Indian's fourth appearance in the tournament.
Novak Djokovic and Nick Kyrgios enthralled fans on their debut as a doubles team on Monday
All the action from Day 4 at the Australian Open on Wednesday
Fourth seed Nathan Thompson of the United States beat Harsh Mankad to set up a final with countryman Young Ryan in the India F3 Men's ITF tournament. Qualifier Young Ryan overcame Hyun-Woo Nam of Korea in the other semi-final.
The duo made the men's doubles semi-finals at Wimbledon and the final of the US Open in the same season.
The American writer and counterculture icon shot himself at his Colorado home.
Mumbai Indians, Kolkata Knight Riders, Rajasthan Royals, Sunrisers Hyderabad and Lucknow Super Giants are among the IPL franchises who have submitted bids.
In Chennai, on Friday, the second seeded Indian got the better of Korea's Duckhee Lee, the third seed, 7-5, 6-2 in 85 minutes, while Thompson beat unseeded Spaniard Pedro Martinez 6-1, 7-6.
Britain's Henry Patten and Finland's Harri Heliovaara beat Australia's Max Purcell and Jordan Thompson 6-7(7), 7-6(8), 7-6(11-9) in the men's doubles final at Wimbledon on Saturday to clinch their first Grand Slam titles.
Jamaica's Elaine Thompson-Herah made Olympic history in Tokyo Tuesday, blazing to victory in the 200 metres to complete an unprecedented women's sprinting "double-double".
Jannik Sinner's stupendous year may have been clouded by an anti-doping controversy but on the court he is finishing the season like an express train and has won 25 of his last 26 matches.
Images from the athletics action at Stade de France, Saint-Denis, Paris, on Friday.
The current Olympic champion Italy's Marcell Jacobs, who has had a wretched time with injury since his shock Tokyo success, looked a little sluggish in finishing second in 10.05 behind Nigerian heat winner Kayinsola Ajayi (10.02).
Vladimir Klitschko retained his world heavyweight titles when he knocked down challenger Tony Thompson in the sixth round of a one-sided contest on Saturday.
Australia's Archie Thompson has made light of his comment that Brazilian Neymar, who recently moved to Barcelona for $74 million (47 million pounds), was overrated, putting the remark down to jetlag or mistranslation.
Yuki Bhambri went down fighting to top seed Australia's Jordan Thompson 5-7, 6-3, 5-7 in the singles final of the Chennai Open ATP Challenger, in Chennai, on Saturday.
Canada powered into the quarter-finals of the Davis Cup for the third straight year with a victory over Britain on Sunday.
Jamaica's Elaine Thompson surprised even herself by storming to victory in the Olympic women's 100 meters on Saturday as compatriot Shelly-Ann Fraser-Pryce failed in her bid to win a third straight title.
James Anderson will retire from Test cricket after the first match of the series against West Indies at Lord's this year.
Yahoo Inc has named Scott Thompson, who runs eBay's online payment unit PayPal, as its new CEO.
Local favourite Thompson saved three match points before prevailing 5-7, 7-6 (6), 6-3 against Nadal, who was playing his first tournament after nearly a year out with a hip injury.
Nick Kyrgios eased past John Isner 7-5, 7-6(5), 7-6(5) in a duel of big servers to fire Australia to a 2-0 lead over the United States in their Davis Cup quarter-final in Brisbane on Friday.
A phone call with his therapist after a worrying semi-final helped propel Noah Lyles to the top of the Olympic podium on Sunday.
Images from the Olympics swimming action at the La Defense Arena, Paris, on Wednesday.
Elaine Thompson clocked a sizzling wind-assisted 10.71 seconds to win the 100 metres at the Jamaica International on Saturday, sending out a warning to her sprint rivals ahead of August's Rio Olympics.
Following a victory over Alexei Popyrin at the Queen's Club Championships in his 1,000th tour-level singles contest, Murray withdrew due to the injury while trailing 4-1 in the first set of his second-round match with Jordan Thompson on Wednesday.
Murray, who in 2013 ended a 77-year wait for a British men's singles champion at Wimbledon and won the title again in 2016, had previously said he was unlikely to continue his career beyond this year and could bow out at the Olympics in Paris.
Former world number one Andy Murray celebrated his 1,000th tour-level singles match by beating Alexei Popyrin 6-3, 3-6, 6-3 to reach the second round at the Queen's Club Championships on Tuesday.
Images from the men's singles Round of 16 matches at the US Open on Monday.
Lyles and Hassan bookend fabulous Paris programme
Another day, another milestone reached for Novak Djokovic as he racked up Grand Slam victory number 350.
We asked colleagues, present and past, to reflect on a man who has made such a difference to their lives and careers. Here it is then, a rich collection of memories that offer enchanting glimpses of the enigmatic Ajit Balakrishnan.
Tiger Woods withdrew after 11 holes of his opening round at the Farmers Insurance Open.
All-rounder Ewen Thompson was the only new face named in New Zealand's 13-man squad for two Twenty20 matches against the West Indies this month. Thompson, 29, has taken 16 wickets at an average of 17 and an economy rate of 6.97 playing for Central Districts.