Video: Tom Dumoulin power output at key Giro d'Italia moments
The clip shows Dumoulin's watts at key moments. It also shows how he spreads the power he can generate over a climb rather than respond to every attack.
The data generated by Velon has been a really interesting addition to pro racing in recent years. The riders are tracked during stages and their power output and other data shared publicly.
One man who generated a lot of watts on the Giro d'Italia was winner Tom Dumoulin.
Velon has done a review of his data for the crucial moments and stages of the race. And the Dutchman's Sunweb team has compiled the clip below looking back at those moments.
Underneath the video you'll also find some graphics for Dumoulin and his main rivals for the Maglia Rosa during various stages of the race.
One interesting thing about Dumoulin is how precisely he has learned to measure his efforts.
As Nairo Quintana (Movistar), Vincenzo Nibali (Bahrain Merida), Thibaut Pinot (FDJ.fr) and others attacked in the mountains, Dumoulin rode his own pace up the crucial ascents.
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He judged his effort so perfectly on some stages that he caught his rivals right on the summit of some of the ascents.
While the others changed pace up climbs, which uses more energy and which some riders simply can't do, he rode in TT mode just behind them.
And in the final stage, a 29.3km TT in Milan, he judged his effort so perfectly that he drew level on virtual GC with race leader Quintana in the first half of the stage.
He had pulled back his 53-second GC deficit by around the halfway point. And the rest of the stage was spent gaining time; 31 seconds to be precise.
That may have been coincidence of course. But he measured his effort so well throughout the race you wouldn't assume so.
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How the virtual GC time gaps between Dumoulin, Quintana and Nibali evolved throughout Sunday's stage 21 TT.
First Maglia Rosa hour of Giro 2017. Lukas Pöstlberger's opening hour of stage 2.
The last 3kms of stage 4 for Bob Jungels up to Mount Etna summit; he took the Maglia Rosa.
Nairo Quintana's stage 9 win at Blockhaus; he attacked to win by 24 seconds from Pinot and Dumoulin. Quintana took the race lead from Jungles as a result. In the image just below we can see Dumoulin's numbers as he chased Quintana during those same final 5km.
Dumoulin timed his effort and this is a moment when he really kept his cool, rode his own race and limited his losses. He actually closed on Quintana towards the finish.
The data relates to a 4km section up a drag in the stage 10TT. There was also a headwind into which Dumoulin produced an average of 411 watts for 7:17. His peak power for 30 seconds was 552 watts.
Dumoulin could not follow the acceleration of Quintana and Zakarin in the final up to the summit at Oropa. However, he pegged them back all the way and caught them with 1.5m to go. He would then attack to win and put 3 seconds in Zakarin in 2nd, 9 seconds in Mikel Landa in 3rd and 14 seconds into Quintana.
Pierre Rolland's winning breakaway data for stage 17.
Stage 20, final 10km. Dumoulin is in a chase group with the breakaway containing Nibali and Quintana pulling away. However, he kept his losses to just 15 seconds. It meant he went into the final 29.3km TT in 4th, some 53 seconds down on leader Quintana, 14 seconds down in Nibali in 2nd and 10 seconds down in Pinot in 3rd. He would finish 2nd in the TT and win the race from Quintana by 31 seconds.
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