While Sky's top placed rider is Geraint Thomas three seconds off the lead, 2017 Giro victor Dumoulin is just 11 seconds down, but perhaps Bardet is the man with the most to smile about at this stage.
World champion Peter Sagan said he had three reasons to be cheerful as he won stage two and took the overall leader's yellow jersey in front of family and friends from Slovakia on the Tour de France on Sunday.
"It's a flawless day, I was a bit scared because Sonny was coming back strong", said Sagan, who also wore the yellow jersey in 2016.
Marcel Kittel, victor of five stages in last year's Tour, saw his hopes of contesting the sprint effectively ended by a flat rear tyre with 7.5km to go, but the bigger incident was still to come.
Yates and Froome sit in 81st and 84th places respectively, 67 seconds off yellow but more concerned about the 51 second gap to the likes of Bardet (AG2R La Mondiale), Vincenzo Nibali (Bahrain-Merida) and Mikel Landa (Movistar). You can never tell who is going to be on a good day or not, but all in all it worked out well for us.
Any thoughts Chris Froome had of taking it easy through the first six or seven stages have gone out the window though after his fall, with the defending champion now firmly on the back foot. But as I say, that's bike racing.
"Some days you're on the right side of it, others you lose time but proud of my boys today", the Irishman tweeted.
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He performed "8 Out of 10", "Mob Ties", "Nonstop" and the now viral "In My Feelings", for the first time. The rapper entered at the end of Giggs' slot with the pair playing their collaboration KMT.
Van Avermaet's teammate Tejay van Garderen finished on the same time to take second place overall with Sky's Geraint Thomas in third.
"The yellow jersey is one that everyone dreams of wearing and to get it on the first day is incredible", said Gaviria, who was making his debut in cycling's most prestigious race. "I think I am in good condition and I have a good team around me but there are no doubts that this is the most important test of the season for me".
Sir Bradley Wiggins believes anti-Team Sky sentiment within cycling led to details of Chris Froome's Salbutamol case being leaked in December.
"There wasn't much the team could have done for me", he said after being accompanied across the line by Luke Rowe.
However he won a stage later in the race, coming close on other days too, and finished fourth overall behind victor Geraint Thomas. I think there will be a lot more time lost throughout the GC group before we hit the mountains.
Froome, who fell heavily before the Giro d'Italia prologue but rallied two weeks later to two spectacular stage wins that won him the Tour, added: "There's still a great deal of road on the way to Paris". We've been close in the past in Tour team time trials. "It just shows that we are here, too, and let's get it on".
For Porte, the stage win took on special significance as it marked a year since he crashed out of last year's Tour on the decent into Chambery on the ninth stage. "We are masters in it and I'm happy to be part of it".