And those were the four who contested the sprint for victory, with Barguil bringing great delight to the home fans on their national holiday.
That leaves Martin in sixth place overall. Team Sky has tried to tamp down discussion that Froome is vulnerable.
"That's another day down so I can't be anything but delighted", said a beaming Aru.
Stepping into the breach are Matthew Keenan and Robbie McEwen, and, say whatever you like, they know their cycling. It's a great card for us to play, especially now that Aru's Astana team don't have the numbers to control the race'.
"It's incredible", said Barguil, who has recovered remarkably quickly from a pelvis fracture in a crash in April.
"Beating Alberto Contador, who I mimicked when I won races as a young rider in Brittany, means a lot to me". What do they get?
By finishing fourth in the leading pack that sped in nearly two minutes ahead of a chasing group that included the Tour's top four riders over all - Aru, Froome, the French rider Romain Bardet and the Colombian Rigoberto Uran - Landa clawed back valuable time in the overall standings. On Friday, Team Sky attacked and spiced things up even more.
"I can barely believe I've beaten Contador today". After a few years of this formula, I've grown tired. I stayed calm and focused.
"I knew it could suit me", he said. "I didn't have the legs at the end to finish it off. Simple as that".
Kyle Larson's No. 42 Chevrolet failed inspection after qualifying, and he was stripped of his pole for the Nascar Cup race at New Hampshire Motor Speedway.
Error! There was an error processing your request. We can start with a calculation of time spent in a breakaway, how far from the finish line the breakaway was caught, how many turns at the front, what kind of stage it was ridden, feats of bravado, plain aggression, cunningness, and a few other variables.
The stage will end at the foot of the Cote de Saint-Pierre, and the finish could see some serious passing. The race would have more opportunities, more ad revenue, more recognition, and more prominent figures.
The Tour rolls out of the Pyrénées with nothing decided.
Having unexpectedly lost the yellow jersey on stage 12, Team Sky pulled off an impressive tactical manoeuvre by having Landa launch up the road on the first climb, from which position he was ultimately able to gain 1-46 on the yellow jersey - enough to move him up to fifth overall, just 1-09 behind Aru.
But the current arrangement has become formulaic: Strangle the field, let the sprinters sort themselves out, and if they're lucky, rookies and climbers might get a chance to shine. The yellow-jersey wearer Aru quickly found himself isolated amidst a sea of his rivals.