Ewan pounced as Deceuninck-Quickstep launched Elia Viviani in the final 200m and blasted past the Italian to take out the stage. Jumbo-Visma's Dylan Groenewegen was third.
Overall race leader Julian Alaphilippe enjoyed a calm day, but the same could not be said for several other GC contenders: Geraint Thomas (Team Ineos) hit the deck with 130km to go in a turn, Jakob Fuglsang (Astana) crashed out, and Roman Kreuziger (Dimension Data) and Nairo Quintana (Movistar) each lost 1:02 after being caught up in a late crash.
