Former Mallorca forward Luka Romero, now at Lazio, remains the youngest to ever play in LaLiga, but Yamal becomes one of just five players to play in the league before turning 16.
"I told him to try things and he did," Xavi said of Yamal's debut. "At 15 years old, just imagine it... He is special and he could have even scored tonight, but [Betis goalkeeper Rui Silva] saved.
"He played with confidence and he showed what he is about. He has no fear and bags of talent. Some of his passes in the final third were really good."
Yamal has already drawn comparisons with Lionel Messi and Ansu Fati, two other forwards who broke into the Barca first team to great fanfare as teenagers.
"He's a similar player because he has that innate talent in the final third which is difficult to find," Xavi added when asked if the three could be compared.
"Lamine doesn't seem like a 15-year-old, he's very mature. He's ready [to play] and he is training well. He can mark an era at this club as part of this team."
Yamal was given a roaring reception from the 88,000 crowd at Spotify Camp Nou and Barca forward Raphinha, who scored the third goal in the win over Betis, said it won't be long until he scores his first goal for the club.
"We were talking about it on the bench and I think when I was 15 I was playing for the local team in my neighbourhood," the Brazil international told reporters.
"Seeing him come on in front of the fans was incredible. It would have been even better if he scored, but I am sure he will get one sooner rather than later."
Andreas Christensen opened the scoring on his return from injury in the 13th minute for Barca before Betis were reduced to 10 men when Edgar Gonzalez was sent off for two bookings.
Robert Lewandowski added the second and Raphinha the third, with an own goal from Guido Rodriguez completing the scoring late on after Xavi had also brought on Ousmane Dembele, who returned from a three-month injury layoff.
The victory restored Barca's 11-point lead at the top of the table over Real Madrid as they close in on a first title since 2019 and saw the team return to winning ways after the shock loss at Rayo Vallecano in midweek.
"After the deserved defeat in Vallecas, we needed to react," Xavi added. "We started well. We were already a goal up when the red card arrived.
"We basically killed the game off in the first half. It was a well-rounded performance from the team, we were able to rotate and give minutes to other players. It's another step towards our objective.
"It was important for Dembele and Christensen to get minutes. Dembele told me he felt good. We have missed them both. They are special players."
The defeat leaves Betis nine points back from the fourth and final Champions League qualifying spot.
Coach Manuel Pellegrini accepted Barca were the better side, but he was not happy about the red card, with Edgar dismissed for fouls on Raphinha and Pedri in the first half after coming on for the injured Luiz Felipe.
"The game lasted 20 minutes," Pellegrini said. "Barcelona dominated, scored from a corner and then the game ended with an absurd dismissal.
"If you ask me, neither of the challenges are bookings. The first one is justifiable because it's [the referee's] criteria, but the second has no explanation because it goes against his criteria.
"The referee himself said two times it's not a yellow and [Barca's players] made him change his decision. He didn't show any character."
Man City take top spot in Premier League as Erling Haaland scores 50th goal in win at Fulham
play
Nicky Butt: Real chance Man City replicate Man United's '99 treble win (2:10)
Erling Haaland scored his 50th goal of the season in converting a third-minute penalty as the visitors established control early, only for Carlos Vinicius to equalise against the run of play with a quarter of an hour played. Julian Alvarez reestablished City's lead on 34 minutes when firing a superb dipping drive over goalkeeper Bernd Leno from 25 yards but Fulham kept fighting in a competitive second half.
The home side thought they should have had a penalty midway through the second period when Kyle Walker challenged Bobby De Cordova-Reid in the box, but referee Simon Hooper was unmoved.
City hung on for a precious victory that takes them to 76 points, one ahead of Arsenal and still with a game in hand.
Rapid reaction
1. City finally move above Arsenal
The momentum has been with Pep Guardiola's side for some time and now the Premier League table proves it. City are top of the league for the first time since beating Arsenal at Emirates Stadium on Feb. 15. The psychological impact of that could be profound, especially coming in the same week when the Gunners were well beaten in the reverse fixture.
The defending champions weren't at their best at Craven Cottage. In fact, Fulham may feel they should have earned a point in a battling second-half display as Guardiola's side struggled to control the game in their customary style.
Yet Ederson was not forced into any meaningful saves and their defence held firm to earn a victory that extends their recent record to 13 wins from their past 14 matches across all competitions -- the only blemish was a 1-1 draw at Bayern Munich in a Champions League quarterfinal they were already winning 3-0 from the first leg.
They have clicked into gear at precisely the right time and look extremely difficult to catch in the home stretch.
2. Haaland's half-century
As City go through the gears in the title race, Haaland continues to surpass individual milestones in what is rapidly becoming one of the most remarkable debut seasons in English football history. There are plenty of stats to choose from, but everyone will have a favourite.
Haaland's third-minute penalty was his 50th goal of the season, making him the first player to reach that mark in a single season at an English club since 1931. The half-century is composed of one EFL Cup goal, three FA Cup goals, 12 Champions League goals and 34 in the Premier League -- the most in a 38-game season. Haaland is now tied with Andy Cole (1993-94) and Alan Shearer (1994-95) for the most goals in any Premier League season and it is simply a matter of time before he breaks that record.
It seems almost perverse to suggest this, but Haaland hasn't even been that efficient of late. He missed a series of glorious chances against Arsenal and could have scored more on Sunday, admittedly in part denied by some fine goalkeeping by Leno. But that is a minor criticism.
Haaland is the most feared forward in the land for a reason; the banner held up in the away end, "Feed the Yorkshire Viking and he will score" is hard to argue with. Dixie Dean's all-time 63-goal haul is not an impossibility with a maximum of 10 more games to play this season.
3. City adapt without De Bruyne
Kevin De Bruyne was instrumental in Wednesday's 4-1 win over Arsenal and his absence from the matchday squad through injury here could have been a significant blow for City.
But whereas De Bruyne and Haaland carved Arsenal open down the middle of the pitch in midweek, they switched up their approach with Riyad Mahrez and Jack Grealish causing Fulham problems on the flanks.
The switch of play to Grealish in particular was always an outlet ball for City in possession, although this wasn't an afternoon when the England international made the most of those opportunities.
Instead, Alvarez came to the fore in an all-action display which featured a sublime 25-yard strike. The Argentina forward popped up all over the attacking areas of the pitch to help City overload Fulham and his useful contributions continue to exist largely in the shadow of Haaland's headline act. That said, Guardiola will obviously want De Bruyne back as soon as possible -- especially with a Champions League semifinal against Real Madrid to come.
Best and worst performers
BEST
Julian Alvarez, Manchester City: Won City's penalty and scored a superb long-range effort that proved to be the matchwinner.
Erling Haaland, Manchester City: Continues to show real signs of developing his link-up play -- he is more than just a finishing machine.
Bernd Leno, Fulham: Made several good saves, perhaps the best from Grealish in the first half and Haaland early in the second, to keep Fulham in the contest.
WORST
Tosin Adarabioyo, Fulham: The former Man City youth player lost both tackles he attempted, won one of four aerial duels and struggled to cope with Haaland.
Bobby De Cordova-Reid, Fulham: Struggled to make an impact against City's defence, although had a penalty shout turned down.
Antonee Robinson, Fulham: Unable to cope with Mahrez in the first half and gave the ball away too often, much to the frustration of Fulham fans.
Highlights and notable moments
Haaland's record-breaking season is rightly taking the attention, but Julian Alvarez reminded everyone of his own quality with a stunning goal that proved to be the winner.
Manchester City manager Pep Guardiola: "It's important to go top but on Tuesday, Arsenal will play. The important [thing] is the West Ham game, it's a game in hand. After that we'll be top of the table and it will be more real.
"The game was so tight until the end, we could not expect anything differently. This amount of games is a lot but we knew that after we beat Arsenal at home that winning these types of games is really important. The players behaved amazingly."
Fulham manager Marco Silva: "A tough afternoon for us because we lost another two players in Tim Ream and Andreas Pereira. Both look really serious injuries so it is a tough moment but we have to keep going, more games to play.
"Tim Ream for sure [is out for the rest of the season], unfortunately for us. He has broken his arm. Let's see on Andreas, I hope it is not so serious but I have to wait for more [information]."
Key stats (provided by ESPN Stats & Information)
Erling Haaland has scored all seven of the penalty kicks he has taken in the Premier League this season.
The player with the record for taking the most penalties in the Premier League without missing is former Manchester City midfielder Yaya Toure, who scored all 11 of the spot kicks he took in the competition.
Haaland equalled the record for most goals in a single Premier League season. His 34th of the campaign drew him level with Alan Shearer and Andy Cole, who both reached the total in 42-game campaigns, when there were 22 teams in the division.
Up next
Fulham: Fulham may be on course to finish the season firmly in mid-table, but they will still have a say in the race for Europe and the battle against relegation as they travel to Liverpool on Wednesday before hosting Leicester City on May 8.
Manchester City: Next up for City is Wednesday's visit of West Ham United to the Etihad Stadium, before they travel to Elland Road next Saturday to play Leeds United -- a team they have scored 14 goals against over their past three meetings.
Total Comments: 0