Paulo Dybala scored a hat-trick as Juventus shrugged off Cristiano Ronaldo's absence with a 3-0 Champions League win over Young Boys on Tuesday to go top of Group H ahead of Manchester United who were held goalless at home by Valencia.
The suspended Ronaldo watched from the stands after his red card during the Italian side's 2-0 win over Valencia in the first round of games.
But Dybala, who has been overshadowed since the arrival of Ronaldo from Real Madrid, ran riot in his first European appearance this season, volleying in the opener following a Leonardo Bonucci long ball after five minutes.
He doubled his account on 33 minutes when he picked up a rebound from a Blaise Matuidi shot, with Juan Cuadrado setting up the Argentine for his third on 69 minutes.
The Swiss champions played the final quarter of an hour a man down after Guinean centre-back Mohamed Ali Camara was sent off for a second yellow card provoked by Dybala.
"I wanted to have a game like this," said 24-year-old Dybala.
"Obviously, a player always wants to play. Last season I had the opposite, as I started with a lot of goals and then lost my way a little.
"Being left out made me work harder and get back into shape, so I am taking full advantage of that now."
Juventus confirmed their 100 percent record after nine games this season — seven league games and two in the Champions League.
It was Young Boys' second defeat from two group games after they lost their opener 3-0 at home to Manchester United.
valencia hold united
At Old Trafford, the pressure continued to build on Mourinho as United produced another insipid attacking display in their goalless stalemate with Valencia.
They are now four games without a win, and Mourinho's decision to recall Alexis Sanchez — after dropping the Chilean for the weekend defeat at West Ham United — failed to pay off.
"Our attacking players aren't in their best moments of confidence and individual level," moaned Mourinho.
"We thought with three or four chances we would score and win the game."
city fightback
Guardiola saw Manchester City come from behind to beat Hoffenheim in Germany in Group F.
David Silva scored three minutes from time to get the Premier League champions back on track after they started their campaign with a 2-1 home defeat against Lyon.
Ishak Belfodil had put Hoffenheim ahead after just 44 seconds, but Sergio Aguero equalised in the eighth minute before Silva's late winner.
"This competition isn't always a red carpet. Manchester City is a fantastic club, but we don't have a history of having to fight and we fought for absolutely everything here," said Guardiola.
"This is one of the happiest days I have had at this club as it will help us going forward."
City next face Shakhtar Donetsk, who squandered a two-goal lead to draw 2-2 with Lyon in France, in a game played behind closed doors.
Brazilian forward Junior Moraes scored twice for Shakhtar, but Lyon fought back to draw with goals from Moussa Dembele and Leo Dubois.
It was a good result for Lyon, whose fans were missing as a punishment for trouble at a game against CSKA last season, and they now top the group.
bayern share points
Meanwhile, Bayern could not hang on to the early lead given to them against Ajax when Mats Hummels headed in Arjen Robben's cross. Young full-back Noussair Mazraoui equalised to give the Dutch side a 1-1 draw.
Those sides are level atop Group E ahead of Benfica, who won 3-2 in a thriller at AEK Athens with Alfa Semedo scoring the deciding goal.
Czech champions Viktoria Plzen, who were crushed 5-0 by Roma.
Edin Dzeko scored a hat-trick for the Italian side, with Cengiz Under and Justin Kluivert also netting.