Endrick scored his first Real Madrid goal as Carlo Ancelotti's side claimed their first win of the LaLiga season after beating Real Valladolid 3-0.
Federico Valverde and Brahim Diaz were also on target for Los Blancos, who struck three times in the second half despite a generally lacklustre display at Santiago Bernabeu.
After a goalless first half, Madrid broke the deadlock within five minutes of the restart, as Valverde thumping a vicious 25-yard free-kick through the Valladolid wall and beyond goalkeeper Karl Hein.
The reigning LaLiga champions had to wait until the 88th minute to establish breathing space with substitute Diaz latching onto Eder Militao's long ball and slotting home.
Endrick, who also climbed off the bench, added gloss to the scoreline deep when he rounded off a swift counter in the sixth minute of stoppage time.
The teenage dream comes true for Endrick
Entering the contest as an 86th-minute substitute, Endrick took just 10 minutes to announce himself to Santiago Bernabeu with his new side's third goal.
At 18 years and 35 days old, the Brazil international became the youngest Madrid player to score on his LaLiga debut in the 21st century, and the first foreign player to achieve the feat overall.
His effort was provided by Diaz, who scored and assisted in a single match in any competition across Europe's top five leagues as a substitute for the first time in his career (207 appearances).
Los Blancos have now won each of their last six league meetings with Valladolid without conceding, while their opponents have lost on four successive trips to the Spanish capital for the first time since a run of six in November 2012.
Atletico Madrid 3-0 Girona: Simeone's side seal first victory of LaLiga season
Marcos Llorente scored a fine individual effort as Atletico Madrid claimed their first LaLiga victory of the season with a 3-0 win over Girona.
Antoine Griezmann and substitute Koke were also on target for Diego Simeone's side at Estadio Civitas Metropolitano.
Atletico, who handed a debut to new signing Conor Gallagher later on, broke the deadlock six minutes before half-time.
Griezmann stepped up and drilled a fierce 18-yard free-kick beyond Girona goalkeeper Paulo Gazzaniga, who had been penalised for handball just outside his own penalty area.
Gazzaniga was helpless again within three minutes of the restart, as Llorente embarked on a powerful solo run from just inside his own half, before rifling into the roof of the net from 20 yards.
And Los Rojiblancos sealed the victory in stoppage time following a swift counter that culminated in Llorente crossing for Koke to volley home.
Data Debrief: Griezmann picks up where Suarez left off
Since the 2015-16 season, Atletico have scored 10 goals directly from free-kicks in all competitions, with Griezmann scoring nine of those.
His effort today was the first such goal by a Los Rojiblancos player since Luis Suarez against Cadiz back in January 2021.
Griezmann also continued his personal scourge of Girona. Indeed, that was the midfielder's fifth goal against them in LaLiga (equalling Borja Iglesias), with no player registering more.
Napoli 3-0 Bologna: Kvaratskhelia on target as Conte enjoys first Serie A win
Antonio Conte oversaw his first Serie A victory in charge of Napoli, who ran out commanding 3-0 winners over Bologna at Stadio Diego Armando Maradona.
Giovanni Di Lorenzo, Khvicha Kvaratskhelia and Giovanni Simeone were all on target for the Partenopei as they bounced back from their defeat by the same scoreline at Verona on matchday one.
The hosts had not lost their opening two games of a Serie A season since doing so under Zdenek Zeman in 2000-01, and they broke through in first-half stoppage time.
A lovely move culminated in Kvaratskhelia clipping a delightful ball into the box for the onrushing Di Lorenzo to control and fire home.
Kvaratskhelia doubled the lead with a quarter of an hour remaining; his shot after a fine solo run deflecting beyond Lukasz Skorupski in the Bologna goal.
Napoli wrapped up the points in stoppage time when David Neres cut a cross back for fellow substitute Simeone, who made no mistake from close range.
Data Debrief: A magnificent seven for Di Lorenzo as Simeone ends drought
Napoli opened the scoring via an unlikely source in Di Lorenzo, though he converted the opportunity with aplomb.
The skipper is one of two defenders, along with Cristiano Biraghi, to score in each of the last seven Serie A seasons.
Namesake Simeone climbed off the bench to net his fifth goal against Bologna in the Italian top flight and, more importantly, end a dismal run of 24 successive league appearances without scoring.
'He will score goals, wait and see' - Ancelotti backs Mbappe to shine after lacklustre home debut
Carlo Ancelotti insists Real Madrid must be patient with Kylian Mbappe following his lacklustre home debut in the 3-0 win over Real Valladolid.
Mbappe failed to find the net on his first appearance at Santiago Bernabeu since his blockbuster move from Paris Saint-Germain, despite registering joint game-high tallies of three shots on target and eight touches in the opposing penalty box.
Madrid took until the 50th minute to break through against Valladolid courtesy of Federico Valverde's vicious free-kick, while substitutes Brahim Diaz and Endrick climbed off the bench to seal the victory late on.
Mbappe was substituted in the 86th minute, but Ancelotti leapt to the defence of the France captain, who he maintains needs time to gel with his new team-mates.
"Mbappe is a spectacular striker, very quick, he moves very well without the ball," the Italian told reporters at his post-match press conference.
"In this position, he is going to score as he has always scored. He doesn't need to play on the left or in the centre. In the end, he will score goals. Wait and see."
Ancelotti also saluted the impact of his substitutes in securing Madrid's first LaLiga win of the new season.
"The taste of a win is always good. When we win a game, I have to be happy, taking into account the difficulties we had, especially in the first half when we were slow and soft," Ancelotti told a press conference on Sunday.
"We were better after the break, with much more mobility and speed in possession. I am very happy for those who come off the bench and take advantage of the few minutes they have.
"Setting the line-up is always complicated, it bothers me, it makes me a bit sad, even though it's my responsibility. I'm the one who has to choose the 11 players that start the match.
"Bearing in mind that in this period of the season, in the heat, it is expected that players get tired. So, it would be right that when a player is tired, he should raise his hand and ask to be replaced. But in my 40 years in football, it has never happened.
"So, it is up to me, the coach, to pick out the ones I think are tired. I think the players have to be more responsible with that. I say it here because I have said it to them privately. I have a lot of resources to use in this squad."
SportsMax is the Caribbean sports channel of choice, committed to providing sporting content of the highest quality to the Caribbean, delivered by a team of highly innovative, passionate and qualified professionals.
(876) 619-7629
digitalmedia@sportsmax.tv
