Doull is no stranger to the cobbles, having twice finished in the top ten of the under-23 Tour of Flanders, but says that racing over the pavé in the senior ranks is a completely different ball game.
"At an amateur level you can be strong enough to do what you want whereas here in the big league you've got a job to do early on because you're not going to be in contention in the final," the 23-year-old explained.
"There isn't really one single thing that's different. Everything's different - the technical side of things, the length of the races, the intensity. It's all a big step up."
Watch: Tour of Flanders 2017 essential guide
Doull didn't finish either of his first two senior cobbled races, E3 Harelbeke and Ghent-Wevelgem,but after working hard for the team in the early stages of both races is set to be selected as part of Team Sky's eight rider Tour of Flanders line-up.
The Welshman's inclusion is even more impressive considering the difficult start to his first season in the professional ranks, contracting appendicitis and having to have his appendix removed prior to the Tour Down Under, then suffering a nasty crash at the Abu Dhabi Tour.
"It’s nice that the team has confidence to put me up for Flanders in my first season," Doull said.
"I’ve had a bad start to the year, so it’s great to get to the Classics and do these races which I’ve always been planning as my early season goals."
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