The sprint finish meant there was no change in the general classification, which Viviani's Deceuninck-Quick Step team-mate Julian Alaphilippe leads after his superb solo attack into Epernay on Monday.
That was the product of a slight gap between the pair as they crossed the line in Epernay, enough for them to be deemed in different groups on the road.
The first true mountain stage follows on Thursday with a finish atop La Planche des Belles Filles, where Chris Froome, out of this year's Ineos team with injury, won in 2012, his then Sky captain Bradley Wiggins going on to win the Tour.
"My father and mother were on the finish line today, they were set to leave yesterday but finally chose to stay because the stage was for sprinters", Viviani said.
"I just needed to do my job in the last few hundred meters".
"Obviously five seconds - it is nice not to lose that".
"It wasn't a five-second gap, though, was it?" he insisted. I felt good so I accelerated in the Mutigny climb but I didn't think I'd go alone.
"If anyone understands the sport, there is 30m gap. Geraint sat up a little bit, he thought people were trying to come around him and that is it. People are trying to make out that it is a five-second gap and it is not". The five seconds makes no difference.
Viviani - who won omnium gold at the 2016 Olympics - came out on top after fantastic work from his team led by current leader Alaphilippe, who selflessly helped set the stage for the final sprint in the train.
Epstein pleads not guilty to sex-trafficking charges
Michelle Licata, who was 16 when she said she had sexual encounters with Epstein, said news of his arrest lifted a huge burden. Jennifer Araoz, now 32, told "Today" she never went to police because she feared retribution from the well-connected Epstein.
The Italian sprinter, frustrated to leave the Giro d'Italia empty-handed in May, took the first pure sprint opportunity of this year's Tour as he edged out UAE Team Emirates' Alexander Kristoff on the line.
"It means a lot", said Viviani. Probably, I can't believe it.
"It was truly the big goal of this season".
"I think in this year he's here to do exactly what he's doing and he's doing it absolutely brilliantly, and I can only stand back and applaud what he did yesterday", said Team Ineos principal Dave Brailsford, the man behind the British outfit's six Tour titles in the last seven years.
"I enjoyed every kilometre today and at the end we got a lovely victory so it was incredible", Alaphilippe said.
"I've got the green jersey but I haven't got a stage win yet, I'll play it day by day - it's a long way to Paris", said the Slovak star after pulling on the green jersey again.
Viviani has now posted stage wins at all three Grand Tours, including four at the Giro and three at the Spanish Vuelta.
He completed the 213.5 kilometres route from Reims to Nancy in a time of 5 hours 9min 20sec.
Before you grab your boogie shoes, you're going to need to make sure that you have the Laid Back Shuffle Emote unlocked. That isn't an easy challenge to finish and you'll need to purchase the Battle Pass in order to finish the challenge.
The grounding line is the line between where the ice sheet rests on the seafloor and where it extends over the water. In the simulations, Thwaites Glacier colossal ice loss kicked in after 600 years, but it could come sooner.
Deputy leader Tom Watson said the revelations in the BBC's Panorama programme on anti-Semitism in his party were "harrowing". The party added that they had filed a complaint with the BBC's director general Lord Hall over the documentary.
William Bando acknowledged he had now called for on the least 100 extra police to pork up the prevailing 40 local officers. Local media reported the attack appeared to be in retaliation for the ambush and murder for six people the day before.
Richard Blumenthal sued in federal court in D.C., and he's won several initial rulings, including that Mr. The government lawyers also want the court to suspend legal discovery recently approved by U.S.
Nintendo has yet to confirm that the mobile game is out now on iOS and Android, but it's likely they will as the day goes on. Staff up with assistants like Goomba, Koopa Troopa, and Buzzy Beetle to help your doctors out with additional skills.
But as Niko and her young crew investigate, they face "unimaginable danger on what might very well be a one-way mission". Netflix ordered a 10-episode first season of the series last spring, and now it's finally nearing its release date.
Using these speakers, you can use your voice to control your smart home, find information from the web, play music, and more. Moreover, with their other products, you can train the camera to recognize people by their face.
That brought Dhoni and Jadeja together and they almost saw India home in an improbably nerve-racking finish in Manchester. Sharma, the Cricket World Cup's top run-scorer with 648, edged Matt Henry behind off the fourth ball of his innings.
Japan's asteroid probe Hayabusa2 set for final touchdown
Hayabusa2 is expected to leave the asteroid to return to Earth at the end of next year, with the samples set for scientific study. Ryugu, which means "Dragon Palace" in Japanese, refers to a castle at the bottom of the ocean in an ancient Japanese tale.
Allardyce reveals he turned down Newcastle job offer
The 58-year-old is keen on managing in the Premier League again and wants to hear what Newcastle have to offer to him. Benitez departed after his contract expired, saying the Premier League club " did not share his vision ".
CONCACAF limits direct World Cup qualifying to top six
The fourth round featured the six survivors plus the top six teams, divided into three groups for round-robin play. The decision reduces the number of qualifying matches for the United States to 10, instead of 16 to 18.
Man arrested after scaling Buckingham Palace gates
Fortunately, the intruder never made it inside the palace, but the source notes that he was "banging" on the doors to be let in. The Sun understands the Queen was the only senior royal sleeping at the Palace because of the refurbishment work going on.