Lazio coach Edy Reja says Mauro Zarate is now playing more for the team.
The Argentine was again impressive in victory over Bari yesterday.
The Biancocelesti remain clear at the top of the table, two points in front of Inter and Milan.
"From the midfield up this team has players of real quality, but we need space to shine, as apart from Mauro Zarate they aren't terribly quick," said Reja.
"Zarate also has the characteristics to defend and he knows that he has to work for the team."