Inter Milan fought back from 2-0 down to defeat Como 3-2 and secure their place in the Coppa Italia final, inspired by a late comeback led by Hakan Calhanoglu.
Barcelona closed the gap on their rivals Real Madrid, moving up to 28 points and pulling two clear of third-placed Villarreal.
Inter Milan missed the chance to go top of Serie A as they fell to a 1-0 loss at Juventus on Sunday.
Gianluca Rocchi steps aside amid a Serie A fraud probe, with VAR official Andrea Gervasoni also under investigation, raising fears of another Calciopoli-style crisis.
The Italian Open quarter-final between Luciano Darderi and Rafael Jodar was temporarily suspended due to smoke from fireworks at the nearby Stadio Olimpico, impacting visibility and the electronic line-calling system.
A summary of results from football leagues across Europe.
The visitors kept up the pressure in the second half and after a series of chances Pulisic equalised, turning home a low cross from close range in the 67th, seconds after coming on.
Third-placed Inter Milan scored twice in the last six minutes through Stefan De Vrij and Alessandro Bastoni to snatch a 2-1 win at Parma in Serie A on Sunday despite a subdued display. The scarcely-deserved victory left Inter eight points behind leaders Juventus and four adrift of second-placed Lazio with 10 games each to play.
IMAGES from Serie A matches played in Italy on Wednesday.
Villarreal fought back to shock Barcelona 3-2 on Sunday, handing the LaLiga champions their first league defeat since late December.
Barcelona came within a whisker of an improbable comeback after last month's thrashing, with 18-year-old midfielder Marc Bernal, starting in place of the injured Frenkie De Jong, scoring in each half and Raphinha converting a penalty after Pedri was fouled.
Inter have now won five straight away matches without conceding a goal, their third time in a single Serie A season in club history and the first time since the 1966-67 season.
Former Inter Milan striker Julio Cruz has joined Lazio and has been included in their squad to face his previous side in the Italian Super Cup on Aug. 8, the Serie A club said in a statement on Friday.
Gonzalo Higuain burst into life by scoring a hat-trick in the final half hour, his first league goals of the season, to help Rafael Benitez's erratic Napoli thrash Verona 6-2 in Serie A on Sunday.
Inter Milan stayed three points clear at the top of Serie A after a 3-0 home win over Lazio.
Italian Cup winners Lazio stunned Serie A champions Inter Milan with two goals in two minutes early in the second half to win the Super Cup 2-1 in Beijing's Bird's Nest stadium on Saturday. Brazilian midfielder Matuzalem opened the scoring against the run of play in the 61st minute and Inter had barely recovered from the shock before Lazio skipper Tommaso Rocchi chipped Inter keeper Julio Cesar to double the lead.
Italian Cup winners Lazio stunned Serie A champions Inter Milan with two goals in two minutes early in the second half to win the Super Cup 2-1 in Beijing's Bird's Nest stadium on Saturday.
Napoli's injury concerns deepened in the second half when David Neres was seen limping off. The stoppage sparked a brief flashpoint between the two sides.
The Argentine striker joined the Italian club on a season-long loan from Chelsea.
IMAGRS from the soccer matches played across European leagues on Friday
Serie A leaders Inter Milan could only draw 1-1 at home to Torino on Sunday while David Beckham was again the inspiration as AC Milan climbed up to second.
Lazio goalkeeper Fernando Muslera watched in horror as Marco Borriello's weak penalty crept under his body and dribbled into the net to help city rivals AS Roma to a 2-0 win over the Serie A leaders on Sunday.
Roberto Mancini moved a step closer to becoming coach of Inter Milan on Tuesday, when Serie A rivals Lazio released him from his contract.
Real Madrid's struggles continued on Sunday as they battled to a 1-1 draw at Girona in LaLiga.
Inter Milan clinched fourth place in Serie A after a 2-1 home victory over Empoli on Saturday while AC Milan gave their European aspirations a boost with a 1-0 triumph over 10-man Bologna.
Mbappe struck in the 74th minute to put PSG on 80 points from 29 games and on the brink of retaining the title with second-placed Lille, who beat Nantes 3-2 away earlier on Sunday, still 20 points behind having played a game more.
Rayo Vallecano forward Alvaro Garcia netted an early goal to give his side a surprise 1-0 win against Barcelona at the Camp Nou on Sunday, moving Real Madrid another step closer to sealing their 35th LaLiga title.
Diego Milito put a forgettable month behind him by grabbing his first goals of the season to send champions Inter Milan clear at the top of Serie A with a 4-0 romp over Bari on Wednesday.
Barcelona joined Real Madrid, Atletico and Real Sociedad in the semi-finals, with the draw set to take place on Wednesday.
Lazio squandered a two-goal lead against Inter Milan as they drew 2-2 at the San Siro on Sunday and wasted a golden chance to take sole possession of third spot in Serie A.
IMAGES from matches played across European leagues on Saturday
Barcelona suffered a shock 1-0 LaLiga defeat at Real Sociedad on Sunday that ended their seven-match winning streak in all competitions.
AC Milan beat visitors Lazio 2-0 to claim consecutive Serie A wins for the first time since February thanks to Carlos Bacca's fifth goal of the season and an M'Baye Niang penalty on Tuesday.
Holders Manchester City will take on RB Leipzig, Red Star Belgrade and Young Boys in Group G.
Barcelona extended their LaLiga lead to eight points thanks to second-half goals by Jordi Alba, Gavi and Raphinha that gave them a 3-0 home win against Sevilla
Real Madrid's La Liga title bid took a dent after Zinedine Zidane's leaders were held to a 2-2 draw at home to Celta Vigo on Sunday, denied all three points by a late strike from Santi Mina. Lazio mounted a superb second-half comeback at the Olympic Stadium to beat Inter Milan 2-1 and move above Antonio Conte's side into second place in Serie A on Sunday.
Round-up of football matches played around Europe on Saturday.
The win pulled Inter on level with Napoli. Both have 22 points, six behind leaders Juventus, and Inter have the better goal difference, although positions are ultimately decided on the head-to-head record.
Inter Milan's Ivan Perisic scored with almost the last kick of the game to snatch a 2-2 draw against AC Milan in Serie A under new coach Stefano Pioli after their neighbours twice led through Suso in Sunday's derby. Perisic turned the ball in at the far post to spare the blushes of his captain Mauro Icardi who had missed two simple chances which could have changed the course of the game. Antonio Candreva also scored a spectacular goal for Inter who made an encouraging start after Pioli was appointed last week with Frank de Boer having been fired after 85 days.