Having won two of the opening three stages earlier in the week, Sagan looked like the favourite for the lumpy stage seven around Geraardsbergen, featuring a number of cobbled climbs including the Muur van Geraardsbergen.
However the Slovak was left frustrated as eventual stage winner Jasper Stuyven (Trek-Segafredo) attacked with around three kilometres remaining, and was allowed to stay away as other riders looked to Sagan to close the gap.
"The finale of the stage was again hard and the rest of the riders weren't collaborating, just looking at me," Sagan wrote on Instagram. "There is nothing I can do about it, this is the way it is."
However the two-time world champion, who is just one win away from the 100th victory of his professional career, was generally satisfied with his results over the seven stages in Belgium and the Netherlands.
"I finished the BinckBank Tour without any crash and looking back to this week, I'm satisfied with I achieved," Sagan continued.
"Two intense weeks of racing came to an end, first in Poland and then here and now I look forward to Québec and Montreal."
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