Lazio coach Maurizio Sarri admits Felipe Anderson is struggling.
Anderson was hooked at halftime for victory over Frosinone.
Sarri said: Felipe is certainly not having a positive period of form.
"I was so convinced he would do well tonight, as he was devastating in training, and even started well the first 15 minutes of the game, but then lost the ball a couple of times in banal fashion and just switched off.
"This time, I had to intervene, with all the respect and admiration I have for this lad."