Lazio coach Vladimir Petkovic has issued an apology to fans following the club's 3-0 defeat by Siena on Monday.
A double from Siena's Innocent Emeghara, either side of Alessandro Rosina's strike, kept Lazio outside the Champions League places in fourth while Siena climbed off the bottom of the table.
Despite a lacklustre showing from his side, the 65-year-old Petkovic has accepted full responsibility for the loss.
"I take responsibility for the team and the tactics, but you have to compliment Siena for the way they played. There are no excuses for this defeat," Petkovic told reporters.
"We have to apologise to the fans because tonight they did not see the real Lazio.
"I did not need to raise my voice at the players – they are smart and know what they have done wrong."
Lazio host Borussia Moenchengladbach in the Europa League on Thursday before resuming their league campaign on Monday at home to Pescara.