AC Milan's Olivier Giroud once again saved the day after the French veteran's solitary strike sank Napoli Sunday and sent his side to the top of the table in Serie A.
The 35-year-old forward diverted home a wayward shot three minutes after the break at the Stadio Diego Armando Maradona to put Milan two points clear of local rival Inter Milan.
Champion Inter, who has a game in hand, had claimed the summit Friday with a 5-0 thumping of Salernitana but now sits second, a point ahead of Napoli.
The Frenchman's eighth league goal of the season was his first away from the San Siro since signing from Chelsea in the summer and came on an eventful night.
"I always try to do my job when I'm in the area, to be in the right place at the right time," Giroud told DAZN.
"I don't want to talk about the Scudetto right now but we're hoping to win something this year. We're ambitious and we'll fight to the end."
It looked as though Giroud wouldn't finish the match midway through the first half when he was flattened by Kalidou Koulibaly and was down for over two minutes as medical staff tried to patch up a bleeding gash above his ankle.
Giroud then clattered into David Ospina seven minutes before halftime, leaving the Napoli goalkeeper worryingly prone on the grass before he eventually got up and carried on.
A recovered Ospina did well to tip aside Ismael Bennacer's low drive just before the hour mark, while Theo Hernandez and Alexis Saelemaekers could have extended the margin of victory late on in a hugely impressive display that underlines its title credentials.
It comes after two deeply disappointing draws with bottom side Salernitana and Udinese which had allowed Napoli to lead the league on goal difference heading into this week's matches.
Luciano Spalletti's team was the league's form team in 2022 but failed to ignite despite having an almost full-strength lineup and a big crowd backing it.
"Today was a big opportunity for us which we wasted, but we can't cry about it because there are lots of games to go," said a disappointed Napoli captain Lorenzo Insigne.
"If we play again like we did tonight no one here will remember us."
Juve apply pressure
Alvaro Morata scored for the first time since mid-January with 20 minutes on the clock at the Allianz Stadium in Turin to keep Juve in the race.
Juve sits fourth, seven points behind Milan, and is applying pressure thanks to a run of 14 league matches without defeat stretching back to the end of November.
Coach Massimiliano Allegri has repeatedly insisted that Juve is not in the title race and Morata was equally evasive when asked about his team's ambitions for the season.
"I'm of my own opinion which is to think about the next training session and the next match. We can't think about it too much," he told DAZN.
Sunday's was a far from an accomplished performance from a team missing a host of players including Paulo Dybala, Weston McKennie, Giorgio Chiellini, Leonardo Bonucci and Denis Zakaria.
Spezia was excellent in the second half and had two great chances to level, with Emmanuel Gyasi heading a huge opportunity straight at Wojciech Szczesny five minutes after the break and the Poland goalkeeper at his best to stop Kevin Agudelo with 10 minutes remaining.
Domenico Berardi continued his impressive season for 10th-placed Sassuolo with a brace of penalties in a 4-1 win at struggling Venezia, who sit three points from safety after being promoted last season.
Berardi has scored 12 times this league season and is also in double figures for assists in the best campaign of his career.
With Federico Chiesa out for the season, the 27-year-old will be in Italy boss Roberto Mancini's thoughts ahead of the Azzurri's crucial 2022 World Cup qualification playoffs later this month.
Krzysztof Piatek scored his sixth Fiorentina goal since arriving as Dusan VLahovic's replacement in January in a 1-1 home draw with Verona.