Max Verstappen has joined his father in slamming suggestions he regularly talks on the phone to Mercedes boss Toto Wolff. The rumours, triggered by Red Bull's Dr Helmut Marko, sparked suggestions the 21-year-old Dutchman might try to exercise a break clause in his contract and switch to Mercedes for 2020. Verstappen's father Jos denied that Max even has Wolff's phone number. Max, speaking in Shanghai, agrees with his father that there is nothing to the speculation. 'I was really surprised to read about it,' he said. 'I have never called Toto Wolff and he has never called me. He doesn't have my number so it's pretty funny. 'Toto and my father sometimes talk, but it's more about babies and...
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