Santiago Castaneda USMNT debut set to cap remarkable year for Paderborn midfielder
Paderborn starlet Santiago Castaneda is in line to make his senior USMNT debut in the coming days, marking the latest milestone in a whirlwind 12 months for the young midfielder.
Castaneda was rewarded for his excellent recent club form with a first call-up to the USA’s senior side earlier this month, ahead of the Stars and Stripes’ two-legged CONCACAF Nations League quarter-final against Haiti.
“I’m super excited,” the 21-year-old said at the time. “It’s special and very emotional. Being called up is a dream come true. I could hardly sleep after the news broke because I was so happy.”
Castaneda can be forgiven for wanting to pinch himself. This time last year, the Tampa native had yet to represent the USA at any level, having only just received his first call-up to the newly formed U21 squad for friendlies against Denmark and Serbia.
An unused substitute in a 1-1 draw with the Danes on 14 November, the holding midfielder made his international bow in a 1-0 loss to Serbia four days later – an experience which may have felt underwhelming to some, but not to Castaneda.
“I’m learning from the guys here and the coaching staff, getting feedback from their perspective and meeting all these players,” he said during that November camp. “Hearing their stories and their backgrounds is something really cool.”
Further U21 outings against Japan and South Korea – not to mention a first international goal in a 4-1 win over the latter – followed in late March. Back in Germany, meanwhile, Castaneda’s stock was continuing to rise as part of a Paderborn side emerging as serious contenders for promotion from Bundesliga 2.
His all-action displays at the heart of midfield helped Ralf Kettemann’s charges establish a three-point cushion over third-placed Elversberg after Matchday 31, leaving Paderborn on the brink of a return to the top flight after a six-year absence.
Two defeats and a draw from their following three games threatened to derail their push, but a 2-0 victory over Darmstadt on the final weekend – followed by a two-legged victory over Wolfsburg in the play-offs – clinched promotion in dramatic style.
Watch: Paderborn 2-1 Wolfsburg - highlights
Castaneda started 27 of his 31 Bundesliga 2 appearances in 2025/26 before playing the whole 210 minutes of his team’s play-off success – including their energy-sapping, 2-1 extra-time triumph in the second leg.
With Castaneda’s contract due to expire in summer 2027, it was only a matter of time before Paderborn tied him down on improved terms. On 26 August – three days before the club’s Bundesliga opener at Mainz – the announcement came that Castaneda had committed his future to the North Rhine-Westphalia outfit.
“Santi has become a key player for us in a short space of time,” said Sebastian Lange, Paderborn’s managing director for sport. “Despite his young age, he plays with remarkable composure, he’s strong in one-v-ones, and he plays for the team. He has made a significant contribution to our promotion to the Bundesliga.”
Castaneda’s impact on the club’s first top-flight campaign since 2019/20 has been no less impressive. Nine games into the 2026/27 season, he is the only Paderborn outfield player yet to miss a single minute of league action. He also went the distance in both of Paderborn’s DFB Cup ties, finding the net in a 4-2 first-round win over Phönix Lübeck.
In the Bundesliga, the tireless midfielder is currently averaging 12 kilometres per 90 minutes – more than any other player in the division apart from Augsburg’s Hennes Behrens. He is also becoming more of a goal threat, racking up 13 attempts at goal so far – the third-highest tally in the Paderborn squad.
On Matchday 4, Castaneda broke his Bundesliga duck with Paderborn’s opening goal against Hoffenheim, paving the way for a morale-boosting 3-1 victory. “This first [Bundesliga] goal is good for my journey,” Castaneda told kicker in the immediate aftermath of that win.
He later elaborated in an interview with USA Today, saying: “When I was younger, I was more of a No.8 or No.10. Now I’m a professional, I’ve been more of a holding midfielder. In the league this season, I would love to take more risks in that phase of the game.”
Watch: Paderborn 3-1 Hoffenheim - highlights
Castaneda may not be the type of character to rest on his laurels, but even he can afford to smile when reflecting on a remarkable 12 months for club and country. “So many positive things have happened,” he said. “I’m learning more and becoming more confident with every game. I’ve enjoyed every day, every week.”
Further cause for celebration lies just around the corner. The first leg of the USA’s quarter-final with Haiti takes place on 14 November, a year to the day since Castaneda’s U21 debut – and just a day after his 22nd birthday. The game has also been moved from Kingston to Miami on safety grounds, making it easier for his family to attend the match.
“It won’t be too difficult for them to be there,” he said, adding with a grin: “Winter is coming, and that can sometimes bring your spirits down a bit. But being able to fly home and see my family is really wonderful.”
A first senior Stars and Stripes appearance would be the icing on the cake.
