Against the team that is second in the league, coach Corini is likely to field a three-man defence.
Sardo and Jokic will patrol the flanks, falling back into defence when the team is not in possession.
Hetemaj should start on the bench after recovering from an injury.
Lazio's chase of Juventus slowed down last week with a draw in Palermo, but Mauri's late equaliser in the Coppa Italia in Turin gave the team the confidence they need to prepare for the match against Chievo.
At the bottom of the table it is more obvious as to who is involved in a relegation scrap, and Chievo need to bring home some points now to secure their mid-table position.
Coach Corini is going to field a five-man midfield to match Lazio's width and add some bulk to the middle of the pitch. Therefore, the visitors should focus more on preventing opposing attacks rather than creating, and then take advantage of set pieces. Should the score still be in the balance at half time, Petkovic may even try to play with two strikers and take one midfielder out of the equation.
WhoScored.com provides you with unparalleled football statistics, as well as detailed football previews and football rankings from competitions all over the world. Our live, in-depth football statistics from the Premier League, La Liga, Serie A, Bundesliga, Ligue 1, Eredivisie, Russian Premier League, Brasileirão, MLS, Super Lig and Championship supplies unique and original insights for football fans, sports betting punters, journalists, football managers and players. We also have football tables, live scores, top performing players as calculated with our unique WhoScored.com ratings, articles, graphics, rankings and much more.