Defending champion Tom Dumoulin storms to Giro d'Italia Stage 1 win
Tom Dumoulin on his way to the Maglia Rosa in Jerusalem (Tim de Waele/Getty Images)

Defending Giro d’Italia champion Tom Dumoulin (Team Sunweb) stormed to victory in the opening Stage 1 time trial in Jerusalem on Friday, beating Rohan Dennis (BMC Racing Team) by two seconds.

The Dutchman, reigning Giro and world individual time trial champion, justified that status with a powerful and assured ride on the undulating and technical 9.7km course, finishing in 12'02".

His Australian rival Dennis had been in the leader’s hot-seat for most of the stage, but saw his lead slip away at the last moment, as the 27-year-old Dumoulin powered up the final incline and into the Maglia Rosa.

Watch Tom Dumoulin seize the Maglia Rosa

Belgian time trial specialist Victor Campanaerts (Lotto Fix ALL) was third, fractionally behind Dennis. Team Sky's Chris Froome, current Tour de France and Vuelta champion, crashed during a course recon and eventually finished 21st, losing more than 37" to his Dutch GC rival.

Team Katusha-Alpecin had three riders in the top 10. José Gonçalves was a very strong fourth, with team-mates Alex Dowsett in fifth and Tony Martin in ninth rounding off a good day for the team.

Englishman Simon Yates (Mitchelton-SCOTT) produced an admirable performance to finish seventh, just 20" down on Dumoulin, while the 35-year-old Domenico Pozzovivo (Bahrain Merida) also produced an eye-catching time trial to finish 10th, 27" behind the stage winner.

Velon was tracking live data for selected riders throughout the Giro curtain-raiser, and showed the marginal difference between the efforts of Dumoulin and second-placed Dennis:

Tom Dumoulin (Team Sunweb)

Amazing effort on first climb
Time: 2'25” | Speed: 40.9km/h | Cadence 100rpm | Power: 470W | Max power: 720W

Sprint to stage win + Maglia Rosa
Time: 18" | Speed: 41.2km/h | Cadence 100rpm | Power: 880W | Max power: 980W

Rohan Dennis (BMC Racing Team)

First kilometre
Time: 1'21" | Speed: 44.4km/h | Cadence 97rpm | Power: 530W | 1min peak: 580W Max power: 900W

Final Sprint
Time: 19" | Speed: 40.2km/h | Cadence 99rpm | Power: 860W | Max power: 1020W

Here, we compare the efforts of Dennis and Dumoulin on the mid-stage ascent, where Dumoulin produced less power on average but still managed to go two seconds faster than Dennis. That would prove crucial in the race for the Maglia Rosa:

Averaging out the numbers for 15 riders on the 9.7km course sheds light on the amazing speed and power of the pro riders - nearly 50 km/h average (despite the hills) and huge average power of 1033.9W:

Ryan Mullen (Trek-Segafredo)

TT specialist Ryan Mullen went out fast - maybe too fast, with a huge maximum power of 964W in the first two kilometres, and the Irishman was unable to maintain a steady tempo and eventually finished 62nd on the day.

First 2km
Time: 3’30" | Speed: 34.3km/h | Top speed: 73.5km/h | Cadence 90rpm | Power: 363W | 1min peak: 662W Max power: 964W


Top 10 stage results:

1Tom Dumoulin (Team Sunweb)12'02" 
2Rohan Dennis (BMC Racing Team)+02" 
3Victor Campenaerts (Lotto Fix ALL)  
4José Gonçalves (Katusha-Alpecin)+12" 
5Alex Dowsett (Katusha-Alpecin)+16" 
6Pello Bilbao (Astana Pro Team)+18" 
7Simon Yates (Mitchelton-Scott)+20" 
8Maximilian Schachmann (Quick-Step Floors)+21" 
9Tony Martin (Katusha-Alpecin)+27" 
10Domenico Pozzovivo (Bahrain-Merida)+27"

Saturday's Stage 2 is a 167km mainly flat stage from Haifa to Tel Aviv, and will be the first chance for the sprinters: