“It was a spectacular win and it came after some really hard racing,” said HTC-Columbia sports director Ronny Lauke.
“Ina and (teammate) Adrie Visser got into an 11-rider break that was only 25 seconds ahead at most for 40 kilometers right the way to the finish.
“The two led into a cobbled section at the head of the pack with about three kilometers to go and they realized they were two of the strongest riders present. So then Adrie made the rest of the break suffer by going flat out with Ina on her back wheel until the last 300 metres.
“Another rider tried to open up the sprint, but Ina reacted quickly and won by a bike-length.”
Lauren Michelle was the top-placed American in 17th at 35 seconds. Brooke Miller finished at the same time, in 18th place.
The next race of the Drenthe series will be the World Cup round, held on Saturday.