In pouring rain, Lampaert matched a number of key attacks in the final 25 kilometres before sailing away from a five-man break inside the final kilometre. Mike Teunissen (Team Sunweb) and Sep Vanmarcke (EF-Education First) completed the podium.
The five-man group slipped clear on one of the final major sector of cobbles with 25 kilometres to go with Vanmarcke lifting the pace after a dangerous move involving Greg Van Avermaet (BMC Racing) and Tiesj Benoot (Lotto Soudal) was nullified.
Vanmarcke powered clear on the cobbles and only Lampaert was able to follow at first before Mads Pedersen (Trek-Segafredo), Teunissen and finally Edvald Boasson Hagen (Dimension Data) made contact.
With Quick-Step monitoring the chase group, the quintet quickly built up a lead of over 40 seconds, as Van Avermaet tried in vain to mount a counter attack.
With five kilometres to go, it was clear that the break would decide the win, and Vanmarcke was the first to begin hostilities with a stinging attack from the front of group. Once again, it was Lampaert who matched him, and the Quick-Step rider responded with the same tactic as he quashed moves from Teunissen, Boasson Hagen and then Pedersen.
How it unfolded
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