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'
|Ivory Coast 0 Togo 0: Reigning champions held to opening draw by Adebayor and co.|
|Goalkeeping woes, Stones and tactical confusion - How Guardiola is making life difficult for himself|
|Ozil and Sanchez can be persuaded to stay - Cech|
|Pogba: I rejected Barcelona and Real Madrid|
|Ghana v Uganda: Gyan dreams of first trophy since 1982|
|Chiellini: Juventus a work in progress|
|Robben agrees Bayern renewal until 2018|
|Hazard: Goals do not matter to me|
|Bennell pleads not guilty to eight child sex offences|
|Muller fed up with debate over Bayern role|
|Wenger glad Sanchez is not ´a Costa problem´|
|Flick resigns as DFB´s sporting director|
|Gomis ´can´t wait´ to welcome Payet to Marseille|
|Chinese FA changes foreign player rules after ´irrational´ spending|
|Like father, like son: Justin Kluivert follows in dad´s footsteps|
|´No reason to lose him´ - Marotta rubbishes talk of Allegri exit|
|Courtois: We don´t need Costa|
|Kane: Tottenham players won´t go to China|
|Noble ´angry and disappointed´ with Payet|
|Klopp furious over Matip uncertainty|
|Wenger surprised by tight Premier League|
|´Money is not everything´ - Conte issues warning amid China speculation|
|Fiorentina defeat a ´bad setback´ - Allegri|
|´This will elevate this group of players´ - Sampaoli revels in Sevilla late show|
|WATCH: Rio Ferdinand screams and dances in crazy Man Utd celebration|
|Real Madrid relaxed, admits Zidane after Sevilla defeat|
|Monaco go top of Ligue 1 with stunning Marseille victory|
|Ronaldo equals LaLiga penalty record as Real Madrid lose|
|Sevilla 2 Real Madrid 1: Stunning late comeback ends unbeaten run at 40|
|Fiorentina 2 Juventus 1: Brilliant Viola breathe life into Serie A title race|
|Tunisia 0 Senegal 2: Mane on target as favourites start strongly|
|Mourinho explains Klopp confrontation|
|Klopp delights in Alexander-Arnold display|
|Algeria must cut out mistakes against Tunisia - Leekens|
|Long balls led to Man Utd equaliser, says Klopp|
|´We attacked, Liverpool defended´ – Mourinho insists a point flattered Klopp´s men|
|DR Congo v Morocco: ´Confidence´ the Atlas Lions´ biggest hindrance ahead of AFCON opener|
|Ibrahimovic: Direct tactics worked for United|
|Guardiola rues gap to Chelsea after Goodison mauling|
|Algeria 2 Zimbabwe 2: Mahrez double prevents shock defeat|
|Manchester United 1 Liverpool 1: In-form Ibrahimovic saves hosts|
|Ivory Coast v Togo: AFCON champions hope to tame Le Roy´s ´troublemakers´|
|Guardiola lays City´s mental frailties bare after Goodison rout|
|Koeman hails ´perfect´ Everton after City mauling|
|Nice stalemate gives Monaco chance to go top|
|Guardiola suffers heaviest league loss in Everton thrashing|
|Neymar-esque Zaha is England´s loss – Bolasie|
|Everton 4 Manchester City 0: Koeman leaves old pal Guardiola´s title bid in tatters|
|Matip withdrawn from Liverpool selection over eligibility questions|
|Podolski staying at Galatasaray, insists sporting director|
|Cavani wants PSG stay|
|Torino move feels normal now – Hart|
|Chinese FA changes rule on CSL foreign players - reports|
|Bayern complete swoop for Hoffenheim duo Sule and Rudy|
|Aubameyang: Dortmund not really like Barca, Madrid or Bayern|
|Pogba can chance a game in one second - Herrera|
|Newcastle Jets 2 Perth Glory 2: Keogh´s eighth of season seals draw|
|Klopp: Liverpool ready for Old Trafford test|
|Herrera taunts Liverpool ahead of Old Trafford showdown|
|I had to be 100 per cent to stay at Boca - Tevez|
|No player is bigger than the club - Carroll takes swipe at want-away Payet|
|Icardi: I can always move to China at end of career|
|Mkhitaryan: Klopp convinced me not to join Liverpool|
|Mourinho: Pogba can score every game|
|Cameroon´s profligacy frustrates Broos|
|Pioli lauds ´exceptional´ Icardi|
|´Now they will be favourites´ - Kimmich questions Leipzig´s ability under pressure|
|Toure set for Champions League recall but Guardiola won´t guarantee long-term City future|
|´It can only be speculation´ - Conte cools Costa to China claims|
|Inter 3 Chievo 1: Perisic, Eder strike late to seal deserved win|
|Verratti and Motta fooled no one, says Costil|
|´Look who won the Ballon d´Or´ – Prickly Simeone insists only results matter|
|Burkina Faso 1 Cameroon 1: Dayo snatches draw for Duarte´s side|
|Angry Sanchez no issue for Wenger|
|94th-minute free-kick snaps TNS´ world-record run|
|Conte hails perfect response to Chelsea´s Spurs defeat|
|Chelsea have more points now than entire 2015-16 season|
|Conte speaks out on reported Costa row|
|Cavani´s reaction to being subbed is normal - Emery|
|Chelsea can cope without Costa - Cahill|
|Aubameyang hopes Gabon learn from late equaliser|
|Ronaldinho ready to return to professional football - agent|
|Unfortunate Gestede sets remarkable Premier League record|
|Mandzukic´s track record speaks for itself - Allegri|
|Bayern beat Mainz to win Telekom Cup|
|Atletico Madrid 1 Real Betis 0: Gaitan seals unconvincing win|
|Leicester City 0 Chelsea 3: Costa-cutting not costly for Alonso-inspired leaders|
|PSG won´t buy for the sake of buying - Kluivert|
|´One of the best performances since I´m here´ - Luis Enrique revels in Barca rout|
|I might have left early myself - Moyes|
|Clement confirms ´imminent´ Swansea deals for Olsson, Carroll|
|Mazzarri pays tribute to ´great person´ Taylor following frustrating stalemate|
|Barca calm on Messi contract situation - Suarez|
|´They don´t normally come off like that!´ - Carroll revels in stunning strike|
|Dyche delighted by Barton´s ´lucky finish´|
|Silva outlines importance of Hernandez after stirring Bournemouth win|
|Messi ticks off Las Palmas to match Raul´s LaLiga record|
|Gabon 1 Guinea-Bissau 1: Late Soares equaliser frustrates Aubameyang|
|Wenger confirms ankle injury for Giroud|
|Rennes 0 Paris Saint-Germain 1: Draxler decisive on Ligue 1 debut|
|Barton determined to repay Dyche´s faith|
|Brady hails Antonio´s ´dedication´ as Payet sits out|
|Top six in different league, says Pulis after Spurs thrashing|
|Barcelona 5 Las Palmas 0: In-form Suarez at the double as rampant champions put pressure on Madrid|
|Sunderland 1 Stoke City 3: Arnautovic sinks woeful Black Cats|
|Corinthians just ´waiting for´ Drogba´s signature|
|Watford 0 Middlesbrough 0: Taylor remembered as Boro frustrate lacklustre Hornets|
|Burnley 1 Southampton 0: Barton scores winner on Premier League return|
|Hull City 3 Bournemouth 1: Hernandez fires Silva to debut Premier League win|
|West Ham 3 Crystal Palace 0: Carroll scissor-kick helps Hammers to victory|
|Swansea City 0 Arsenal 4: Giroud, Sanchez strike as fortune shines on Gunners|
|Costa absent but still no start for Batshuayi|
|Tunisia v Senegal: Talent alone not enough for Cisse´s AFCON favourites|
|Vertonghen injury looks bad, says Pocehttino|
|Srna snubs Barcelona|
|No nerves about Messi contract - Bartomeu|
|No nerves about Messi contract - Bartomeu|
|Kane lauds Spurs´ best display this season|
|Pogba loving Ibrahimovic ´connection´|
|DR Congo on strike ahead of AFCON opener|
|Higuain: Juventus turn you into a war machine|
|Algeria v Zimbabwe: Leekens wary of opening slip-up|
|Sturridge: I´m Liverpool´s best striker|
|Tottenham 4 West Brom 0: Kane the daddy as Spurs trounce sorry Albion|
|Zidane hails Ramos as one of Spain´s most inspiring players after Sevilla row|
|Payet sign guarded after West Ham star demands exit|
|Evra still undecided on future|
|A-League Review: Wanderers keeper Janjetovic pelted with snakes on return to Sydney FC|
|Sevilla boss Sampaoli has ´no interest´ in Ramos row|
|Madrid back Ramos in Sevilla row|
|Recovering Bale boosted by Madrid´s record run|
|Pique sits out Barcelona v Las Palmas|
|Luiz calls for cool heads at Chelsea|
|Hazard: Title race not over|
|Liverpool have nothing to fear - Klopp|
|Mourinho backs Pogba to become United captain|
|Wenger reveals Cazorla may miss another 10 weeks|
|´Come on Chelsea!´ - Costa sends Blues backing amid exit talk|