AS Roma coach Vincenzo Montella has explained benching Francesco Totti.
The captain again started Roma's defeat at Champions League opponents Shakhtar Donetsk.
Montella said: "Totti is in great shape physically and I am counting on him. I hope he can break his drought in the derby, as he hasn't scored in a while, but his exclusion in Donetsk was purely tactical.
"It has been a difficult week, but I think I've managed to keep the team calm. Lazio are bound to be the favourites, as they're ahead of us in the table, but there will be the usual fiery derby atmosphere.
"Perhaps as a player I felt the occasion of the derby a little more. A Coach tends to have more impact during the week than on match day."
