Neymar wasted no time in making an impact on the field for Paris Saint-Germain, scoring on his debut in a 3-0 win at Guingamp on Sunday.
Neymar was handed a start by coach Unai Emery for the game in Brittany, two days after international clearance came through for his 222 million euros switch from Barcelona.
The 25-year-old, at home in PSG's all yellow change kit, played a part in the own goal scored by Jordan Ikoko that gave the away side the lead early in the second half.
He then set up the second goal for Edinson Cavani with a superb pass in behind the Guingamp defence before completing a comfortable victory with his team's third goal eight minutes from the end as PSG made it two wins from two to start the French season.
"I'm very happy. The main thing was to win. The team played well and I played well," Neymar, speaking in Spanish, told Canal Plus.
Despite the many distractions of the last couple of weeks, including trips to China, Portugal and the French Riviera and glitzy presentations to the media and PSG fans, Neymar lasted the full 90 minutes.
He had taken the place of Javier Pastore in the Paris side in the only change from last week's 2-0 win over Amiens, completing a 350 million-euro front three with fellow South Americans Cavani and Angel Di Maria.
Neymar was one of four Brazilians in the PSG line-up, not including Brazil-born Italy midfielder Thiago Motta, for the game played before a sell-out crowd at the 18,000-capacity Stade du Roudourou.
Neymar, playing mainly as an inside left, threatened sporadically in the opening stages before his cross in the 35th minute found compatriot Marquinhos, who headed against the woodwork.
He then watched as a Cavani free-kick was tipped over by Karl-Johan Johnsson as the first half ended goalless.
But PSG needed just seven minutes of the second half to get the breakthrough with Neymar involved in the build-up as Ikoko -- a former PSG player -- tried to play the ball back to Johnsson and succeeded only in passing it into his own net.
Neymar then released Cavani with a delightful pass as the Uruguayan slotted home the second goal just after the hour mark.
PSG are second in the fledgling table, behind Lyon on goal difference. They are one of five teams to have maximum points after two games.
Defending champions Monaco have also won both matches so far after Radamel Falcao netted a hat-trick in their 4-1 victory at Dijon earlier.
Jemerson also scored for Monaco as Kylian Mbappe was left on the bench amid speculation linking him with a 180 million-euro move to either Real Madrid or PSG.
Meanwhile, in the English Premier League Romelu Lukaku netted United's first two goals as Mourinho's men cantered to a 4-0 home win in their opening fixture on Sunday.
Romelu Lukaku can attack his first Manchester United season under no pressure after scoring two goals on his Premier League debut against West Ham United, according to manager Jose Mourinho.
Having scored in United's UEFA Super Cup loss to Real Madrid, he has three goals in his first two official games for the club and Mourinho said it would expedite his adaptation to life at Old Trafford.
"He scored in the Super Cup, he scored today. He's playing well, he's working hard. He likes the team, the team likes him," Mourinho said.
"For any striker, they can play phenomenally well, but if they don't score goals, the pressure is on them.
"So good for him, good for (Everton's) Wayne Rooney, for (Arsenal's Alexandre) Lacazette, for (Chelsea's Alvaro) Morata, for all the guys arriving in new clubs and scoring goals on the first day.
"It's always oxygen, happiness and confidence for them. Romelu knows me well. He knows that sometimes strikers can play very well for the team without scoring goals," the ManU coach said.
Lukaku, 24, finished crisply off the post from Marcus Rashford's pass in the 33rd minute and climbed to head in a Henrikh Mkhitaryan free-kick early in the second period.
Late strikes by substitute Anthony Martial and Paul Pogba gave United their biggest opening-weekend win since a 5-1 rout of Fulham in 2006 and sent them to the top of the fledgling standings on goal difference.
Mourinho, however, was eager to point out that despite a 3-1 win at Bournemouth in their opening fixture a year ago, United had finished the season in sixth place.
"Last season we were also top of the league in the first match and we finished sixth, so this means nothing," said the Portuguese, whose side visit Swansea City on Saturday.
"I want to make it clear. This just means we played well and with confidence levels really high and now our challenge is to keep these confidence levels," Mourinho declared.
"The fans have reasons to be optimistic, because we also are optimistic. But for me, with years and years of experience, and experience in the Premier League, my feet are on the ground and I'm calm."
While Nemanja Matic also excelled on his home debut, there was no place in the squad for United's third new signing, Swedish defender Victor Lindelof, but Mourinho said he would be eased into action gradually.
"I think Victor needs a little bit of time," the United manager said. "He's going to have that time."
West Ham had four debutants on show in Joe Hart, Pablo Zabaleta, Marko Arnautovic and Javier Hernandez, but despite procuring a couple of sights of goal, they never looked like causing their hosts problems.
Lukaku picked up where he had left off in the second half, first releasing Rashford to run through and shoot wide and then doubling his tally in the 52nd minute.
Former Manchester City stalwart Zabaleta's foul on Rashford gave United a free-kick on the left and from Mkhitaryan's cross, Lukaku stole between Winston Reid and Arthur Masuaku to plant a header past Hart.
Arnautovic served a reminder of West Ham's threat with a header that De Gea was obliged to tip over, but it seemed only to redouble the home side's determination to stretch their lead.
After Rashford had left the right-hand upright shuddering with a curler from the left-hand apex of the area, Mkhitaryan released Martial to coolly tuck away United's third before Pogba swept in the fourth from 20 yards.