Al-Nassr top the standings and are two points clear of second-placed Al-Hilal. Al-Ahli are fourth on 25 points.
Allegri was sent off towards the end of the game for his fierce protests over refereeing decisions.
Juventus have appointed Thiago Motta as their new head coach to replace Massimiliano Allegri, the Serie A club said on Wednesday.
IMAGES from football matches played across Europe on Wednesday.
For Napoli, the match highlighted their struggling form, marking three consecutive defeats across all competitions for the first time since October 2016. They are fifth with 24 points.
Real appointed former Spain manager Julen Lopetegui on Tuesday, but Allegri had been among the front-runners to take over from Zidane, who quit after winning a remarkable three successive Champions League trophies.
Chelsea came from behind to beat Crystal Palace 3-1 thanks to added time goals from Conor Gallagher and Enzo Fernandez.
IMAGES from Serie A matches played on Saturday.
Real Madrid's Rodrygo struck twice and Jude Bellingham was also on target as the visitors enjoyed a 3-0 win at lowly Cadiz.
Tottenham Hotspur beat Nottingham Forest 2-0 away with goals by Richarlison and Dejan Kulusevski for a second straight win that nudged them closer to the Premier League top four on Friday although they had midfielder Yves Bissouma sent off late on.
Juve released a statement saying "in light of the recent radiological examinations... (Pogba) needs to continue his rehabilitation program."
Juventus climb to top of Serie A with win over Lecce
Coach Massimiliano Allegri dismissed suggestions that the newly crowned Serie A champions have nothing to lose
Napoli broke a three-decade long drought, to lift the Seria A title on Thursday. The last time Diego Maradona led them to the title in 1990.
Real Sociedad will join Atletico Madrid, Real Madrid, and LaLiga champions Barcelona in Europe's elite club competition next season.
Table-toppers Napoli, barely affected by injuries, have won five league matches in a row to extend their unbeaten run since the start of the season in both Serie A and the Champions League.
But after an exceptional transfer window and with Luciano Spalletti at the helm, Napoli dominated the title race while their main rivals all suffered slumps during the season.
Round-up of football matches played around Europe on Saturday.
AC Milan coach Massimiliano Allegri was fired on Monday following a series of dismal results from the seven-times European champions.
Juventus coach Massimiliano Allegri said Cristiano Ronaldo has told him that he will stay at the club this season, something the new boss believes guarantees goals for the Serie A giants.
News of all that's transpired on and off the football field
A round-up of Sunday's matches in LaLiga, Ligue 1 and Serie A
Former Arsenal and Chelsea defender Ashley Cole says English players are afraid of leaving their comfort zone and playing overseas.
There has been no official confirmation of the agreement from either club but Sarri, who won the Europa League with Chelsea, is expected to sign a three-year contract, Sky reported.
Manchester United conceded two late own goals to allow Sevilla to snatch a 2-2 draw in the first leg of their Europa League quarter-final at Old Trafford on Thursday.
Clarence Seedorf will need to tap into all the experience he gained as the only player to win the Champions League with three different clubs if his AC Milan side are to get past Atletico Madrid into the quarter-finals.
Juventus coach Massimiliano Allegri complained about his team's finishing after the Serie A leaders were held to a goalless draw at Fiorentina.
Didier Drogba would be a great addition to AC Milan's squad, coach Massimiliano Allegri said on Wednesday as Italian media speculated that a deal was in the offing.
Images from the football matches played on Tuesday.
A statement from Premier League club on Friday evening read: "Manchester United is delighted to confirm that the club has reached agreement with Juventus for the transfer of Cristiano Ronaldo, subject to agreement of personal terms, visa and medical."
When Massimiliano Allegri arrived in Turin last July, Juventus ownership had set two goals for him - win a fourth straight "Scudetto" and reach the Champions League quarter-finals.
Mario Balotelli came off the bench to help 10-man AC Milan record a 2-0 victory at Genoa on Friday that tightened their grip on third place in Serie A ahead of Tuesday's Champions League return match with Barcelona.
Juventus landed a fourth successive Serie A crown, and their first under coach Massimiliano Allegri, with four games to spare by winning 1-0 at Sampdoria on Saturday.
It was hard not to feel sorry for AC Milan coach Massimiliano Allegri and his players after they were on the wrong end of a Barcelona backlash in the Champions League on Tuesday.
A stunning Mario Balotelli free-kick gave AC Milan a 2-1 win over mid-table Parma in Serie A on Friday that put them level with third-placed Lazio and a point ahead of rivals Inter Milan in the race for European places.
Juventus scored three goals in the opening 19 minutes to destroy AS Roma 4-1 and move three points clear in Serie A on Saturday.
AC Milan were booed off the pitch after suffering a shock 1-0 home defeat by Atalanta in Serie A on Saturday following a second-half Luca Cigarini strike that stunned the San Siro.
Football tranfer news and speculations from across Europe.
Juventus coach Massimiliano Allegri shunned the plaudits after his side move closer to the treble by beating AS Monaco to reach the Champions League final on Tuesday.
AC Milan are battling to sign Barcelona's Zlatan Ibrahimovic after their disappointing pre-season but the Swede is unlikely to be on board for Sunday's Serie A opener at home to promoted Lecce.