The 59-year-old star said it was "thrilling" to hand over the role to someone who cares for it so deeply, reported Entertainment Weekly.
"I think Jodie's going to be amazing. I spoke to her the other day, and she's so full of excitement and so full of passion about the show. She really loves the show. And she's a brilliant actress," said Capaldi.
Whittaker, who rose to fame with ITVs crime drama "Broadchurch", will be playing the 13th Doctor on the sci-fi TV series.
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