The keeper had an absolute shocker as he failed to deal with Candreva's cross and gifted the opposition the lead by inadvertently turning into his own net.
Should have been quicker to close Candreva as the winger's cross resulted in the opening goal, but he was far more eager to press at the other end.
Was keen to push forward and put the ball into the box but he was exposed early on by Lulic. He was withdrawn after 30 minutes due to an injury.
The Brazilian was involved in the mix-up which saw Lazio take the lead midway through the first half, and he hardly inspired confidence thereafter.
The defender was involved in both of his side's defensive slip-ups. There was a lack of communication for first goal and he brought down Floccari for a penalty.
Stepped up his game after the break and should have scored one of three decent chances. His persistence won a penalty but Alvarez could not convert.
A disappointing performance from a player who was practically a non-entity for the first 45 minutes. His long range efforts were not threatening and neither was his delivery.
Did not provide enough forward momentum to push Inter up the pitch. He was denied a great goal by a top-drawer save from Marchetti in the first half.
The young Croatian was in decent form as he was the creative hub in the Inter midfield. His brilliant dribbling and inch-perfect passing were key to all of Inter's brightest moments.
He showed superb ability in the air to head home in the first half but despite continually getting into dangerous areas he could not add to his tally, missing a pivotal penalty.
The veteran was unable to get a goal against his former club but showed plenty of desire to get into space. Came close on one occasion.
Could do very little to keep out Alvarez's header but he showed his quality with some excellent saves.
The Brazilian was not particularly mobile in the first half and struggled to track the runners through the middle. He was replaced by Ciani at half-time.
He was sporadic, yet successful, in his attempts to join the attack but allowed Pereira space to supply the Inter equaliser.
Failed to close down the Inter players in the wide areas, making it easy for them to flight crosses into the area. Put in a great block on Rocchi before the break.
Did not even offer a contest as Alvarez rose to head the ball into the back of the net. He was fortunate the Argentine missed from the spot after his clumsy tackle.
The Bosnian was quick to exploit the space behind Jonathan in the opening 30 minutes and he put some dangerous balls into the area.
Put in a combative performance in midfield and ran himself ragged. He was not shy of going in for a challenge.
Picked out some clever passes early on but was forced to work quickly as Lazio played on the counter-attack. Capped his 100th Serie A performance with a converted spot-kick.
Continually supplied width to the Lazio attack which spread Inter out and created plenty of space. He should have added one himself before the interval.
His presence no doubt contributed to the error for the opening goal and a brilliant run drew a foul from Ranocchia for the penalty.
The German was unable to match his five-goal haul at the weekend, wasting a great chance after just nine minutes. Could not be found in the areas Petkovic would have wanted.
Came on for Ranocchia who took a knock in the 53rd minute and had a relatively comfortable spell.
Replaced Jonathan in the 31st minute and provided a lot more solidity on the right. However, he was not quite as adventurous as his team-mate.
Brought on for Kuzmanovic in the 80th minute.