Friday, 26 May 2017 : Dumoulin was ninth on stage 18 and retained a 31-second lead over Nairo Quintana, with Nibali third overall.
Dutchman Dumoulin said his two closest rivals were “clearly working together” and hoped they would lose places.
Nibali countered: “Has he ever heard of karma? He should do less talking because even he might miss the podium.”
American Tejay van Garderen claimed Thursday’s 18th stage, the 28-year-old securing his first Grand Tour stage victory by edging out Mikel Landa at the finish in Ortisei.
Dumoulin finished ninth, over a minute behind Van Garderen, but held off attacks by Quintana to maintain his overall advantage on the Colombian.
Britain’s Adam Yates finished 12th and moved up to ninth overall.
Dumoulin, seeking to become the first Dutch winner of the event, crossed the line in the same time as Quintana at the end of the 137km stage from Moena to Ortisei.
Defending champion Nibali remains one minute 12 seconds behind, while Thibaut Pinot of France gained more than a minute on the leading trio in the general classification.
Source : Internet