Maurizio Sarri believes Cristiano Ronaldo and his other Juventus stars are lacking sharpness after their Coppa Italia final loss to Napoli on Wednesday.
Napoli recorded a 4-2 penalty shoot-out win over Juve after a goalless draw in the decider in Rome.
In two games since returning to action following the coronavirus-enforced break, Juve have been held goalless.
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Sarri said Ronaldo and his other attackers are lacking the level of fitness required after not playing competitive matches for more than three months.
"He's in the same shape as the others, like Paulo Dybala and Douglas Costa, he is lacking the sharpness to do what works best for him," he told RAI.