J. M. DEL POTRO - D. KUDLA Tennis prediction

Match between world nr. 3 Del potro and  local Denis Kudla. I cant see Kudla here winning even 1 set , because Del potro in order to win this USO has to save as much energy as he can and he will be 100% prepared,  i see him winning here in 3 sets  Kudla has pretty good serve but this bet will be won even if del potro win 6-46-4 6-4, that means in every set he needs just a 1 break