Inter coach Walter Mazzarri put the blame squarely on the referee after his side's 4-2 Serie A loss to Napoli.
Trailing 3-2 in the 71st minute, Inter had Ricky Alvarez sent off for a second bookable offence by referee Paolo Tagliavento.
Mazzarri let fly at Tagliavento, insisting his side had a chance of getting back at the game before the decision and also saying that Inter's only other loss this season was the fault of the official.
"There was a series of terrible mistakes that changed the game," Mazzarri said.
"The first card (on Alvarez) was harsh too, as he tripped up.
"I saw far worse challenges that were worthy of a card and I think with 11 men against 11 we could've got back on level terms.
"Perhaps Tagliavento is unlucky with us, as we've had two defeats all season and both were with Tagliavento making many mistakes.
"The other loss was against Roma with a non-existent penalty.
"We're unlucky with him, it keeps happening to us and maybe Tagliavento is just out of shape."
Inter have now conceded seven goals in their past two Serie A matches and have only compiled three points in their past four domestic league games.
Mazzarri believes this is the by-product of playing attacking football and that he has been happy with the team's recent performances.
"If we choose this approach to football and attack en masse, then we're going to run some risks at the back," he said.
"We tend to concede on counter-attacks and usually with individual errors.
"We had prepared to block the through balls, but at the first error Gonzalo Higuain doesn't miss those chances.
"We had more possession and felt strong, but at times we get too confident and give the ball away.
"I am happy with the overall Inter performance, as we came to Naples and took control of the game from start to finish but unfortunately, we create a lot and make a lot of mistakes too."
|Coach: Rafael Benítez|
for G. Higuaín 78'
for D. Mertens 85'
for A. Réveillère 90+1'
|A-League Review: Garcia rescues point for Perth, Adelaide up to second|
|Poyet calls for mid-season break|
|Van Gaal rules out Januzaj move|
|Rodgers: Balotelli may have to get used to bench|
|Lallana: I was trying too hard|
|Pardew braced for Old Trafford test|
|Adriano announces Le Havre deal|
|Song to face ´brother from another mother´ Fabregas|
|Walker juggles music, football careers in Sweden|
|Lescott unfazed by City reunion|
|Tskhadadze appointed Georgia coach|
|United to finish top three - Ferdinand|
|Allardyce: Stamford Bridge stalemate saved my job|
|Southampton need three January signings, says Watson|
|Liverpool can make Champions League, says fanzine editor|
|Walsh: Hull clash crucial for Leicester|
|Toure, Aubameyang and Enyeama make shortlist for African gong|
|Docherty backs Chelsea to win two-horse race|
|Liverpool could benefit from Hyypia influence - Scales|
|Saudi Arabia name Asian Cup squad|
|Forty-year-old Cahill no problem for Postecoglou|
|Wenger criticism baffles Redknapp|
|Leicester must strengthen in window - Walsh|
|United not title contenders - Docherty|
|Koeman: Southampton youngsters will get a chance|
|Dyche empathises with Liverpool striker crisis|
|Cagliari turn to Zola|
|Rooney thanks Van Gaal for Christmas break|
|Cruzeiro offer Paulinho Tottenham exit chance|
|Carlisle´s wife grateful to Burnley|
|Katebe called up to Zambia AFCON squad|
|Cape Verde name AFCON squad|
|Finke names much-changed Cameroon squad|
|Grant omits World Cup troublemakers for AFCON|
|Blackpool striker Ranger goes AWOL|
|Allardyce relishing Mourinho meeting|
|Ashley fails to increase Rangers stake|
|Crystal Palace v Southampton: Koeman calls for focus|
|Warnock targeting striker in January|
|Chelsea v West Ham: Adrian vows visitors will attack|
|Heskey signs short-term deal at Bolton|
|Everton v Stoke City: Martinez eyes strong form|
|Juninho defends David Luiz|
|Burnley v Liverpool: Dyche defends Rodgers ahead of Turf Moor test|
|Arsenal v QPR: Wenger eyes festive momentum|
|Liverpool are growing in confidence, says Rodgers|
|Redknapp: Austin future could depend on survival|
|Martinez wants Everton consistency|
|Barca want Neymar until 2020, says agent|
|Jones undeterred by pressure of Liverpool starting role|
|Allardyce ´knows how to beat managers´ - Carroll|
|Jones playing for a new contract|
|China select Evergrande spine for Asian Cup|
|A-League Preview: Koren tips City to build|
|Khedira keen to fight for Real spot|