Kasia Niewiadoma says more women's WorldTour teams try to control the races, which opens the door for smaller teams to win
Niewiadoma attacked on the final ascent of the Cauberg before holding off searing chase from van Vleuten in thrilling finale.
The WorldTour peloton has left the pavé behind, but the classics rage on for another week in the Netherlands and the Ardennes.
Video highlights from women's Amstel Gold Race, which world champion Chantal Blaak won from a small breakaway.
Chantal Blaak wins Amstel Gold women's race, beating a small breakaway in the Dutch classic.
Anna van der Breggen and Boels Dolmans will look to fend off the likes of Katarzyna Niewiadoma and Annemiek van Vleuten at the Amstel Gold Race on Sunday.