Napoli coach Rafael Benitez lamented his team's failure to finish off Genoa after their 1-1 draw on Monday.
Emanuele Calaio haunted his parent club, coming off the bench to score a stunning 84th-minute free-kick to earn Genoa a surprise point at the Stadio San Paolo – a goal he apologised for.
Gonzalo Higuain put Napoli ahead on 18 minutes in front of their home fans with a chipped finish, but the third-placed Serie A side were unable to seal the result.
Benitez said he wanted several more goals during the first half and felt Genoa were always likely to respond after his team failed to score again before the break.
"The first half was the key for me, as we wanted to score two or three goals and then control it after the break," the Spaniard told Sky Sport Italia.
"We didn't achieve that, we knew they were dangerous and that at 1-0 we were always in the balance.
"Clearly if we win our games, then it's easier to think we can finish second. We must understand that this type of match has to be finished off by half-time and that is all."
Higuain's clever finish from a Marek Hamsik pass appeared to have Napoli on track for the first-half target Benitez had set them.
But Calaio, who came on in the 63rd minute, hit back with a delightful, curling left-footed free-kick from 35 yards to earn Genoa a point.
Calaio helped Napoli from Serie C1 to the top flight with several goals during seasons 2005/06 and 2006/07 and the 32-year-old rejoined them in January 2013, only to be loaned out.
He waved apologetically to the crowd as his team-mates celebrated with him after his goal.
"I'm sorry to have scored at Naples," Calaio said.
"Sorry to do this here at the San Paolo but this is my job.
"When the coach gives me the opportunity I always try to give the maximum satisfaction and perform for this shirt. They deserve it, these fans who have come this far."
Genoa coach Gian Piero Gasperini said: "Calaio cared so much about being here in this stadium, so it wasn't easy for him.”
Gasperini praised his younger players, including striker Moussa Konate, with Genoa sitting 11th in the Serie A.
"(Moussa) Konate only just turned 20 and has already made a lot of progress from a few months ago," he said.
"He's growing from game to game and we have an excellent group of young players who are being helped by the experienced figures.
"We don't tend to have great ballistics specialists, so we tend to have to build our moves and get close to the goal in order to score.
"It might seem as if we don't create many chances, but in reality we just take longer to get there."
|9||G. Higuaín||18' 71'|
|Coach: Rafael Benítez|
for M. Hamšík 72'
for Jorginho 80'
for D. Mertens 86'
|Wilson signs new Bournemouth contract|
|Euro 2016 exit won´t derail Spain, says Mendieta|
|Newcastle sign Ritchie from Bournemouth|
|Neymar gets new lease of life as Barcelona plot for Messi´s succession|
|Watford hand Deeney new five-year deal to end exit rumours|
|UEFA opens disciplinary proceedings against Portugal and Poland|
|Kimmich confident Germany can overcome Italy hoodoo|
|Sagna: I don´t want to upset the French public|
|PSG clinch Ben Arfa deal|
|Crystal Palace sign Mandanda from Marseille|
|Krychowiak expects PSG deal to be completed shortly|
|Sagna hails Nolito qualities after City swoop for Spain star|
|Neymar ends exit talk by penning new Barca deal until 2021|
|Kabasele joins Watford on five-year deal|
|Lagerback: Iceland will give France questions to answer|
|Bartomeu sure Messi will renew, but no Luis Enrique talks|
|Hummels reveals Klopp fights|
|Pardew: I want to manage England - but not now|
|De Jong: I haven´t retired from Netherlands duty|
|Palace complete £13m Townsend signing|
|Pato, Falcao and Amelia leave Chelsea|
|Barzagli, Bonucci and Chiellini - the latest Italy wall looking to deny Germany|
|Nolito´s Manchester City move confirmed|
|Coleman heaps praise on Williams|
|Sanchez reveals gruesome update of ankle injury|
|Ronaldo: We all feel abandoned by retiring Messi|
|Ibrahimovic arrival makes Manchester the ´capital of football´ - Vieira|
|Del Bosque: I sent a message to the whole squad, except Casillas|
|USA to play first friendly against Cuba since 1947|
|Poland boss praises Lewandowski after Euro 2016 exit|
|Fonte: United will regret missing out on Sanches|
|Santos: Portugal should have had a penalty|
|Ranieri: English football is not in crisis|
|Ronaldo dreaming of Euro 2016 glory|
|Nawalka: Poland should be proud of Euro 2016 exploits|
|Santos: Goalless Ronaldo was immense for Portugal|
|No player out of reach for Chinese Super League - chief|
|Fearless Sanches had no nerves in dramatic shootout|
|Portugal through despite Ronaldo off-night|
|´Very happy´ Neymar drops contract hint|
|Poland 1 Portugal 1 (aet, 3-5 pens): Heartbreak for Blaszczykowski as Santos´ men sneak into the sem|
|Del Bosque to resign from Spain role|
|Giggs can be a manager in his own right, insists Round|
|Euro 2016 Diary: Wails for Bale, a grumpy water carrier and the inevitable return of Will Grigg|
|Manchester United agree Galatasaray friendly|
|Hazard must bloom into bona-fide superstar as Eden project comes full circle|
|Hazard excited by ´world class´ Ibrahimovic in the Premier League|
|Hazard determined to make his mark on Lille return|
|Special One and Zlatan: United´s match made in heaven or gamble from hell?|
|Vertonghen to miss rest of Euro 2016 due to torn ankle ligaments|
|Conte has helped me a lot, admits grateful De Sciglio|
|Juve pay tribute to departing Caceres|
|Williams banking on ´band of brothers´ to stop Hazard|
|No lack of desire with England - Lampard|
|Germany v Italy: Kroos calls on Khedira knowledge for Azzurri test|
|Coleman welcomes pressure of ´biggest game since 1958´|
|Ibrahimovic claims he will join Manchester United|
|Sevilla receive ´big offer´ for Krychowiak|
|Bartra seeks to justify Dortmund´s trust|
|Montella vows to bring the good times back to AC Milan|
|Bournemouth bring in striker Mousset|
|Barca confirm Umtiti fee agreed|
|Puel takes charge at Southampton|
|Hulk completes €55.8m Shanghai SIPG switch|
|Bruce focused on Hull and pursuing transfer targets|
|Sinclair agrees Watford move|
|Janssen wants AZ to accept Spurs offer|
|Bartomeu claims five-year Neymar deal imminent|
|Reluctant father figure Evra defends Pogba|
|Boateng declares himself fit to face Italy|
|73 goals, 44 assists: The stats that show why Man Utd want Ibrahimovic and Mkhitaryan|
|Conte has made Italy proud again – Vieri|
|Evra pledges to respect Iceland after England shock|
|Vrba leaves Czech Republic for Anzhi|
|Bernstein backs Allardyce for England job|
|Rodgers rejects England talk|
|Klose lauds ´unbelievable´ Italy|
|Muller confident Italy´s defence can be breached|
|´Lineker does not know what he is talking about´ - Raiola defends Pogba|
|Morrison opts to stay with West Brom|
|Kempes expects Messi to return to international football|
|´Leave Messi alone!´ - Maradona|
|Evra suffers training injury|
|Iceland´s Viking chant terrified England - Shilton|
|Ballack doubts Italy can repeat Spain performance|
|Caparros hoping Del Bosque continues as Spain coach|
|Falcao targeting Ligue 1 top scorer award|
|Maradona: England continue to be over-hyped|
|Santos: You talk about Ronaldo because he is great|
|James Rodriguez is an ´average player´ - Stoichkov|
|Mooy moves from Melbourne to Manchester City|
|Copa America champions Chile set to face Euro 2016 winner|
|Guardiola ´relaxed´ ahead of renewing Mourinho rivalry|
|Simeone on post-Champions League final comments: I spoke heatedly|
|Skrtel pins blame on friend after Klopp ´d***´ slur|
|Euro 2016 Diary: Medals for Irish fans and Blaszczykowski inspires Wimbledon triumph|
|Bale is slightly better than Hazard, admits Lukaku|
|Argentina make Simeone approach, jokes Atleti president|
|Mamelodi Sundowns 2 Enyimba 1: Arendse nets winner in Group B clash|
|Wilmots confirms Batshuayi medical ahead of expected Chelsea switch|
|Santos insists no favourite in Portugal-Poland tie despite Ronaldo presence|
|Celtic is the best place for me to be, insists Dembele|
|Lagerback: I don´t think I will take a job like England|
|Umtiti has ´exclusive agreement´ to join Barcelona|
|Milik putting Ronaldo worship to one side for 90 minutes|
|Only losers make excuses, insists Florenzi|
|Nawalka: We must not focus solely on Ronaldo|
|Hamsik: Bayern offer reports are nonsense|
|Injured De Rossi a major doubt to face Germany|
|Wales will not be a stepping stone for Belgium - Bale|
|Lyon add Nkoulou as Barcelona close in on Umtiti|
|Neymar, Rafinha and Douglas Costa named in Brazil´s Olympics squad|
|Goalless Lewandowski should look to Ronaldo for inspiration|
|Mane has cost Liverpool far too much - Thompson|
|Bilic not interested in England job, says Gold|
|Hummels hopes Gomez can break through impressive Italy defence|
|Gerrard: England gripped by a ´culture of fear´|
|Bournemouth sign Chelsea´s Ake on season-long loan|
|Iceland emulating Leicester City would delight Hallgrimsson|
|Chelsea could still sign Pato permanently, says agent|
|Wales v Belgium: Wilmots will not man-mark Bale in quarter-final clash|
|Genoa seal Ocampos capture|
|Fuchs retires from Austria duty|
|Bundesliga fixtures: Bayern begin title defence against Werder Bremen|
|Bordeaux complete Toulalan signing|
|Suarez confident Messi will return for Argentina|
|´England players did not know what to do´ - Lineker critical of Hodgson|
|Dybala turned down ´€80m Barcelona move´|
|Emery a big loss for Sevilla, says Baptista|
|Valencia: ICC derby more than a friendly|
|Defoe: Allardyce ready for England|
|Wales defend celebrations after England´s Euro 2016 elimination|
|Rooney: Next England manager doesn´t have to be English|
|Mascherano set for Barca stay|
|Carragher suggests Klinsmann as England boss, dismisses Shearer|
|Glik confirms Monaco move|
|Australia to face Japan in Melbourne|
|Galliani: Montella gives Milan a fresh start|
|We must take care of Messi - Argentina president|
|England players ´babies´ and soft - Carragher|
|Higuain unlikely to renew Napoli contract - agent|
|Hart: Tough job for next England boss|
|Nani to join Valencia, confirms Fener president|
|Glenn: Man, woman or caretaker for England|
|Skrtel´s Fenerbahce move ´almost done´|
|Al Ahly 1 ASEC Mimosas 2: Jol´s men beaten again|