The Quick-Step Floors rider pipped Peter Sagan and Andre Greipel on the line at the end of the flat 195-kilometre stage from La Baule to Sarzeau on Tuesday.
He now heads team-mate Tejay van Garderen in the general classification, with Team Sky'sGeraint Thomas three seconds back in third and defending champion Chris Froome a further 52 seconds behind in 17th.
Maximiliano Richeze delivered a flawless ride-along performance for Quick-Step comrade Gaviria, powering him past the Dimension Data team and into the forefront for a challenge on the stage victory.
Mark Cavendish was in with the frontrunners to win the stage, but as has been the case so far this Tour, the sprint ace's legs were not up to scratch this time.
Fellow Britons Froome and Thomas didn't fare any better but will have ended Stage 4 close to content with their results, nestled among a pack in which Van Avermaet was also happy to reside.
That left Gaviria, the 23-year-old making his Tour debut this year, to put in another huge turn of power which proved too much for Sagan despite a late push. Last year's runner-up Rigoberto Uran (EF Education First-Drapac) and Katusha leader Ilnur Zakarin were slowed down by the accident.
The Belgian, who took the overall lead on Monday, avoided a crash that split the peloton with 5km to go.
Women Awarded Almost $5 Billion In Damages from J&J
The verdict comes in the first test of plaintiffs' claims of an asbestos ovarian cancer link in use of J&J's iconic baby powder. They also heard from the cancer survivors themselves and the loved ones of six plaintiffs who have died from their cancer.
But there were no changes among the title hopefuls. The 2014 champion Vincenzo Nibali was 19th (1:06), Romain Bardet 20th (1:15) and Nairo Quintana was 48th (2:08).
But with all the big sprint trains pulling hard, the odds were always against the four leaders, and the catch was finally made inside the final 2km, allowing the quick men to take over.
Fans cheered and waved the black-and-white striped Breton flag on the roadside as the peloton rolled through the country villages.
Today, though, it was back to the more typical fare of the Tour's opening week.
Tomorrow, the riders face an interesting stage of 181 kilometers from Lorient to Quimper, with five categorized climbs in the final part of the race. With another gruelling trip across the Alps and Pyrenees, who will wear the yellow jersey on the Champs-Elysees? "(Depending) on how it goes there will be differences between the riders".
"There will be a lot more time lost throughout the GC group before we hit the mountains". During Tuesday's stage, several syringes were seen alongside the course route in apparent protest by anti-Froome spectators.
They were responding to a petition by an environmental activist concerned over the state of one of the world's seven wonders. The court said the governments at both levels have exhibited "lethargy" in deploying strategies to preserve the structure.
Dozens of demonstrations are planned throughout the country with the largest expected to take place in central London on Friday. Hundreds of protesters descended on the castle to voice their opposition to the president's visit.
The naming rights deal for the football stadium is unique, because the school's deal is with Schnatter, not the Papa John's brand. Schnatter also reportedly said that when he was growing up in IN, people would drag black people from trucks until they died.
Jose Mourinho insists England have reason to be optimistic despite falling agonisingly short of the World Cup final. It's a young team, the majority of the players will play in the next World Cup with more experience at club level.
He also teased the Hungarian prime minister, Viktor Orban, over his strongman reputation, greeting him jokingly as "dictator". He added that Juncker made no secret about his illness and is now on medication and feels better.
Sturgess died on Sunday , while Rowley has regained consciousness and is no longer in a critical condition. About 100 counterterrorism detectives are working on the investigation, according to the police statement.
Trump did not specify which countries had committed to what, and it remained unclear whether any had changed their plans. For Germany, the focus of much of Trump's criticism, that number was 6.6 percent. "I'm a very stable genius".
While tax credits have helped boost electric-vehicle demand in the US , they remain only 1.1percent of the market. As of next January, subsidies will be cut in half before being phased out completely a year later.
John Isner laid his aces on the table but found a way into the Wimbledon semi-finals by breaking the Milos Raonic serve. After taking a medical timeout after the third set, Anderson surprisingly broke Isner's serve at 2-all in the fourth.
Added Focus Features , "Since the series ended, fans of Downton have always been waiting for the Crawley family's next chapter". Gareth Neame , the film's producer, said, "Now, after getting many stars aligned, we are shortly to go into production.
The comments infuriated some of May's Conservative Party colleagues, including one who tweeted, " Where are your manners , Mr. He and First Lady Melania Trump are scheduled to have tea with Queen Elizabeth II at Windsor Castle in the late afternoon.
China rises, US falls in global innovation index
A higher ranking in the report means better economic development and richer innovation-prone environments. The top 10 innovative economies also include Britain, Singapore, Finland, Denmark , Germany and Ireland.
WWE Purposely Avoided Mentioning Brock Lesnar On Monday’s Raw
Well, the UFC, WWE or someone has to figure out what's going on in Lesnar's mouth before any talks of a title fight move forward. What resulted was Lesnar hurling insults and UFC setting up their future championship match in a very pro wrestling-esque way.
Marvel Just Announced a BLACK WIDOW Movie
Shortland's credits include the World War II drama Lore from 2012 and the horror film Berlin Syndrome from past year . Marvel Studios' Black Widow movie is one step closer to happening, as the film has now set a director.