The steep gradient of the Puy Marie is only 2km, but for 2020 Tour de France leader Primoš Roglic (Jumbo-Visma), it was his most impressive move yet to win the race outright.

As Tadej Pogachar (UAE Team Emirates) accelerated uphill and the gradient reached double digits, Roglic grabbed his wheel and his rivals scattered to the hillside behind him.

At this point, the stage win went to Dani Martinez (EF Pro Cycling), but the damage done by the Slovenian duo was clear when Roglic and Pogachar crossed the finish line in 12th and 13th places. the two were 13 seconds ahead of Richie Porte (Trek-Segafredo), who had a 13-second lead over the rest of the field. The gap was 13 seconds to Richie Porte (Trek Segafredo), while the other competitors struggled to close the gap.

Roglic, the leader since Sunday, more than doubled his gap from 21 seconds to Egan Bernal (Ineos Grenadiers) in just one climb. Pogachar is in second place overall, 44 seconds behind, and Bernal is in third place overall, 59 seconds behind.

Until stage 13, there were six riders within a minute of Roglic's lead, but now there are only two. The riders who struggled in Puy Marie have a lot to consider. If Roglic and Pogachar can take such a big hit on such a short climb, how much worse will it be in the Alps? [Bernal, Rigoberto Urán, Nairo Quintana, and Miguel Ángel López round out the next four Colombians.

Asked if it was a day for the Slovenes or for the Colombians, Roglic replied: "It depends on how you look at it. For me it was a Slovenian day. I am also very happy to have two Slovenes in front of the Colombians."

As for the 5km climb that opened the Tour, Roglic looked up at the summit from the base of the climb and thought, "Ugh, that looks painful. It was full of gas, everyone was at their limits, and we were trying to get to the top as fast as we could. It was a big effort, but I'm really happy with how it turned out for me."

It is worth noting that although Pogachar made the early moves, Roglic was in the lead all the way to the finish. If Pogachar is more explosive, then Roglic may be his equal when it comes to maintaining a high pace on the climbs.

Roglic was diplomatic about whether Bernal or Pogachar was his biggest rival. Of course, even though he has formed an alliance with Pogachar at Puy Marie, there may come a time when this young man becomes his biggest rival.

"The Tour is not over yet and a lot can happen. There are many different scenarios," said Roglic.

"I don't want to think about that. If I just focus on myself, I will be happy with any ranking."

While it is true that the Tour is far from over and Roglic has yet to gain a decisive advantage, the crucial 10 minutes of intense action on the extinct volcano of Puy May felt like the biggest turning point in the two-week race so far.