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Analysis: Mathew Hayman’s massive watts on stage 9 cobbles

By Stephen Gallagher • Published
Mathew Hayman was at the front of the group over the Tour's cobblestones in stage 9. Photo: Tim de Waele | Getty Images

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Stage 9 of this year’s Tour de France will go down as one of the most chaotic and exciting stages in recent times. With 22 kilometers of cobbles, it was always going to be an explosive day, and the favorites for the win did not disappoint. After a day fraught with crashes and flats, it came down to three of the best classics riders in the world sprinting for the win. German John Degenkolb took the victory; his first career Tour stage win, and an emotional comeback after a horrific crash in 2015.

Rider analysis: Mathew Hayman

Team result: 35th, +37sec
View the complete file >>

Never has teamwork been more critical than on stage 9 of this year’s Tour. The results reflect how much the GC leaders needed the help of teammates with classics racing experience, as those without clearly struggled to hold the pace and stay out of trouble.

Luckily for Michelton-Scott’s Adam Yates, there are not many better or more experienced classics riders than Mathew Hayman. The 2016 Paris-Roubaix winner played a key role in helping Yates tackle the cobbles of Northern France, and we were lucky enough to get a look at his file from the day.

The start
The race went off hard, as expected, and proved almost instantly dangerous when pre-race favorite Richie Porte crashed out of the race barely 10 kilometers from the start. During the opening 47 kilometers, which were cobble-free, we can see the speed was high as riders fought for a safe position. At this point, Hayman averaged 250 watts, 3.02 W/kg and normalized 303 W, 3.74 W/kg averaging just over 46kph.

The tension continued to build all the way to the first sector, which started at the 47km mark; riders hit the cobbles at a bone-jiggling 55kph. After the stage, many riders said the pace prior to each sector was as hard as the cobbles themselves. With every team’s GC hopes on the line, jockeying would have been intense to stay ahead of the chaos sure to ensue in the group.

Crash on sector 12
The first big split happened with around 70 kilometers to go, with a large crash on sector 12. The peloton fractured into several groups here, and unfortunately, Adam Yates found himself in the second bunch. You can see from the file that it was a panic situation for the next 22 kilometers as Hayman and his teammates drove hard to bring Yates back to the front.

Effort during the chase
30 minutes: 22 kilometers
Average power: 344 W, 4.18 W/kg
Normalized power: 368 W, 4.54 W/kg

Many of Hayman’s peak powers were completed during this fight to regain contact. On the first sector after the split, for example, Hayman produced his peak five-minute power of 400 W, 4.8 W/kg. But this doesn’t tell the full story — if we look a little closer we can see that during this five-minute period, he pushed between 600 W and 1,232 W on 13 occasions. He frequently hit between 7.5-15 W/kg, which shows what it really takes to maintain full speed over the cobbles.

Cobbles also present some unique physiological demands worth noting. When we compare a high-intensity effort on a normal surface to the pavé of Roubaix, we see massive differences in how force is applied. Riders must engage more muscle groups, and continuously adapt their posture/position on the bike. Worse, the consistent jarring takes a major toll on any hope of recovery. The ability to make these massive energy expenditures repeatedly (over the 15 sectors of pavé) is what distinguishes classics riders from the rest of the peloton.

Back in the game
The effort did not let up when the team finally rejoined the lead group, as they made contact just prior to one of the harshest sectors: Mons-en-Pévèle. Over 900 meters of cobbles and one minute long, Hayman produced 501 W, 6.09 W/kg to keep Yates with the leaders. This can’t have felt pleasant, as he had just chased for 22 kilometers at full gas to regain contact. Again, this shows that opportunities to recover or find any sort of respite during this stage were very limited.

The pace across many of the cobbled sectors continued, as crashes and attacks further split the groups. Some of the worst cobbled sectors came near the end of the stage, so it was no doubt an anxious time for Hayman and his colleagues to help Yates navigate through the chaos. On the second-to-last cobbled sector, Camphin-en-Pévèle, Hayman had to kick out 366 W, 4.42 W/kg for nearly three minutes—but it must have been a relief to finish this sector with Yates safe, near the front, and with the end of the stage in sight.

In the final five kilometers, Hayman averaged 334 W, 4.03 W/kg for 6:26. Yates finished 27th on the stage, and with the same time as Chris Froome (Team Sky) and Mikel Landa (Movistar), both strong GC favorites. Ultimately it was a successful, if challenging day for both Hayman and his team, and they’ll head into the mountains in a great position for an assault on the GC.

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