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It looks like the journalist from the original source article here has received literally all of their data, picked his own conclusions and made the graph to sum it up. It's in Dutch, l'll translate with DeepL.
Look under the hood: Roglic and Kruijswijk give access to data
In each of the three major rounds, a Jumbo-Visma rider was on the podium in 2019. What happened in the engine rooms of Primoz Roglic (29) and Steven Kruijswijk (32)? And in which round did it go the hardest?
By Thijs Zonneveld
After a few days in Vuelta, he knew enough. His legs did what they had to do, the figures on his meters were what they had to be. The remark against his soigneur was wrapped up as a question, but it wasn't. Actually Primoz Roglic (29) simply established something. "I can win here, eh?
He was right. The Slovenian started at the Vuelta with the legs to win. He was unstoppable. Not by his opponents, not by a leaky paddling pool. The information that he and his team Jumbo-Visma shared about his power shows that he reached a very high level in the first half of the Tour of Spain.
He excelled in his specialty: linking explosiveness and endurance during efforts of between ten and twenty minutes. Especially on the goat track to Mas de la Costa, in the seventh stage, this was clearly visible. For fifteen minutes he reached 6.5 watts per kilogram (w/kg). Alejandro Valverde was the only one who could stay ahead of him. Two days later Roglic fell on a muddy road in Andorra, but in the last kilometers of Cortals d'Encamp he swept everyone up. No problem at all.
Best time trial
That was three and a half months earlier, halfway down the Giro, actually it wasn't. Roglic started in Italy as he started the Vuelta: as the strongest rider in the race. Unbeatable in the time trials, almost unassailable uphill. The time trial to San Marino was the best of his career. After more than twenty flat kilometres he managed to get an average of 5.95 w/kg out of his tank on the last, climbing 12.2 kilometres. He drove his direct competitors in minutes.
But after two weeks of Giro things went wrong. In the fourteenth stage Roglic indicated that he was suffering from his stomach and intestines. This can be seen in the data. He reached 'only' 5.65 w/kg on the Colle San Carlo (over 36 minutes) and had to pass when the later final winner Richard Carapaz attacked. Roglic never recovered from that setback. Two days later he reached 5.61 w/kg on the Mortirolo for three quarters of an hour, while he drove a kind of time trial from the foot to the top. The pink leader's jersey disappeared from sight and in the final weekend he had to pull out all the stops to make it to the podium. He was demolished. On the last day he rode one of his worst time trials in recent years. His power was 20 percent less than in a comparable time trial in the Tour of Romandy, a month earlier.
In the Vuelta there was no kickback. Because the Slovenian didn't get sick and perhaps also because he had followed a less difficult race schedule during the preparation. Roglic was at his best at the end of the second week. In stages 13 and 15 he reached 6.3 w/kg twice. The other favourites didn't stay far away from him. This shows that the level of the Vuelta wasn't as bad as was claimed here and there. Yes, the top was not very wide. But the top 5 was on a level at least comparable to that of the Giro.
Attack after attack
According to the roadmap, the last week of the Vuelta was not extremely hard, but practice showed otherwise. The course exploded day after day. Roglic was happy in the fan stage to Guadalajara and fell on his way to Toledo. He and his team had to turn down attack after attack. It worked. He didn't make the extremely high values of a few days earlier, but he didn't have to. On the penultimate day he was tested one more time by the competition. It was a battlefield from start to finish, with the result that everyone already started on their gums on the final climb to Plataforma de Gredos. Roglic only reached 5.4 w/kg there, but that was largely due to the low percentage of the climb and the tactical jousting of especially Movistar (the team of Valverde and Nairo Quintana).
In the last nine minutes, when Valverde entered the scene, Roglic was at his post. He was still peeping 6.11 w/kg out of his toes. Roglic proved in Spain that he can maintain his high level for three weeks. He already has his next goal in sight: the Tour. In 2020, Jumbo-Visma will theoretically start with an armada of leaders. It's often said that the level in the Tour is higher than in the Giro and Vuelta, but is that also the case?
To determine that, we take the performance data from the number 3 of the last Tour: Steven Kruijswijk (32). He also gave us access to his data. The first test of the Tour de France took place in stage 6, at La Planche des Belles Filles. Kruijswijk became twentieth, by pushing 6.16 w/kg away for twenty minutes. That is high, but not extremely high. Certainly not on the first real climb of the Tour. The Dutchman is not so explosive. He has to rely on his stamina and recovery.
That turned out to be the case a week and a half later. Kruijswijk finished third on the Tourmalet, after a gruelling climb of 51 minutes at 5.55 w/kg. A day later, in a Pyrenean ride over four cols, he drove 6.13 w/kg for almost half an hour on the final climb to Prat d'Albis. In other words: after a heavy mountain stage at the end of the second week he reached the same level as in the sixth stage. That's exactly what Kruijswijk is good at: not deteriorating as fast as his competitors. In the Alps the Tour fell into the final fold. There was a tactical jousting on the Galibier, followed by the shortened stage on the Iseran. The decisive Tour stage led to Val Thorens, over a 33 kilometre climb. Kruijswijk took Julian Alaphilippe off the podium. That went very fast: 5.7 w/kg for one hour and seventeen minutes. Never before has he drove such a high power (357 watts) over such a long period. Not so strange that an attack on Egan Bernal's yellow jersey was no longer possible.
Difficult to compare
Roglic drove faster in the Vuelta than in the Giro, but it is difficult to compare his values with those of Kruijswijk in the Tour. In Spain the climbs were generally relatively short, in France they were long and at high altitude, where the air is thinner. But what is clear from a comparison of the data: in the Tour things didn't go any better than in the Giro or the Vuelta. On the contrary. That was the case last year as well: Kruijswijk got higher values in the Vuelta than in the Tour. It's possible that things went fast in the Longer Tour and that more riders reached a high level. In his Vuelta form Roglic would have been one of the best riders of the Tour on the climbs up to half an hour anyway. Add to that a good time trial and the conclusion is simple. Primoz Roglic can win the Tour next year. As long as there aren't too many fan stages.
Translated with
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