Two goals gifted and a penalty conceded: it is fair to say that Nicolas Otamendi's Benfica bow is up there with the very worst debuts in football.
The Argentine defender joined Benfica from Manchester City in a £13.7million deal with Ruben Dias going the other way in a £64m move, but the Portuguese side's fans might be questioning the wisdom of that exchange already.
And the worst part about it is that Otamendi - who promised to 'help Benfica grow' when he completed his move - produced his horror display against Primeira Liga's bottom side Farense, of all teams.
Nicolas Otamendi endured a debut to forget for Benfica despite his new side winning 3-2
Despite Benfica edging past their opponents 3-2, Otamendi infuriated supporters by giving away a penalty for a foul on Serbian striker Nikola Stojiljkovic.
The 32-year-old was shown a yellow card for his challenge, but much to his delight midfielder Ryan Gauld missed his opportunity to convert from the spot for Farense.
In addition, Otamendi was blamed for Jonatan Lucca's equaliser after he lost an aerial battle to see the 26-year-old slot one past Odysseas Vlachodimos. He was also criticised for handing the visitors their second of the evening, with his indecisiveness seeing Farense striker Patrick rob him of the ball in the middle of the pitch and go on to score on the counter.
Following Otamendi's stinker, Sportsmail takes a look at 10 other horror debut displays, and trust us, there are some absolute shockers...
Real Madrid vs Athletic Bilbao - September 22, 2005
There is only one place to start really. There were certainly few raised eyebrows when Real Madrid added the notoriously injury-prone Newcastle defender Jonathan Woodgate to their roster of Galacticos in the summer of 2004, paying £13.4m for his signature.
Unsurprisingly, his fitness troubles continued and it took over a year for Woodgate to make his debut - but at least it was a memorable one.
First, he scored a spectacular own goal on 24 minutes, sending a perfectly-executed diving header past his goalkeeper Iker Casillas.
And to make things worse, he was sent off in the 66th minute for a second yellow card.
At least Woodgate saw the funny side, saying afterwards: 'F*** me, what a debut!'
Jonathan Woodgate had a shocker on his Real Madrid debut against Athletic Bilbao in 2005
He scored a spectacular own goal and was sent off after 66 minutes during his Madrid debut
LEEDS vs Leicester - December 2, 2000
The £18m signing of Rio Ferdinand was meant as a real statement by Leeds United and their ambitious chairman Peter Ridsdale - at that time, he was the most expensive defender in the world.
But his debut at Filbert Street suggested they had made a terrible mistake.
The Leicester fans were gleefully singing 'what a waste of money' after coasting into a three-goal lead inside half-an-hour with Ferdinand having a shocker.
Manager David O'Leary, remarkably, refused to blame Ferdinand afterwards, saying: 'I was delighted with Rio, but he didn't get a lot of help from those around him.'
Luckily, things would get better for Ferdinand, who became a rock solid presence for Leeds, England and later Manchester United.
Leicester coasted into a 3-0 lead vs Leeds inside half an hour during Rio Ferdinand's debut
ARSENAL vs Birmingham - October 14, 1997
With Lee Dixon locking down the right-back spot, it was always going to be difficult for the up-and-coming Jason Crowe to break into the Arsenal team.
So when he replaced Dixon for extra time in a League Cup tie with Birmingham in October 1997, he would have wanted to impress.
Thirty three seconds later, he was heading for an early bath after a high tackle on Martin O'Connor led to Uriah Rennie brandishing the red card.
It was the fastest debut sending off in English football history and Crowe would only make two more appearances for the Gunners.
Uriah Rennie brandishes a red card to Jason Crowe after a high tackle on Martin O'Connor
SOUTHAMPTON vs Leeds - November 23, 1996
The most bizarre and short-lived career in the history of the Premier League.
In November 1996, Southampton were struggling for goals and manager Graeme Souness thought he'd found the answer to his prayers when AC Milan legend George Weah phoned him and offered a tip-off about his cousin Ali Dia.
According to Weah, Dia had played for Paris Saint-Germain and had won 13 caps for his country Senegal. He was languishing in the German second tier but apparently deserved a shot at the big time.
In reality, 'George Weah' was a complete chancer and Dia was a fake who actually played for Blyth Spartans in the Unibond League.
But this was only discovered once Souness had handed Dia a Premier League debut, bringing him on for Matthew Le Tissier against Leeds.
Remarkably, he played 22 minutes before the realisation dawned and Souness took him off again.
'He ran around the pitch like Bambi on ice; it was very embarrassing to watch,' Le Tissier said.