The Croatian's latest project follows short-lived stints with Rybakina and Tsitsipas.

After ill-fated stints with Elena Rybakina and Stefanos Tsitsipas last year, can the Croat help the Frenchman in his return from a back injury?

Cousins Rinderknech and Vacherot also signed up, along with BNP Paribas Open regulars Khachanov and Rublev.