“I'm super excited. It's special and very emotional. Being called up is a dream come true,” Santiago Castaneda said after earning his senior USA call-up. The SC Paderborn 07 midfielder is now on the verge of a debut that sits neatly on top of a year of steady climb, from first youth international minutes to becoming a fixed part of his club side.

A year that moved quickly

Castaneda's first call-up to the newly formed USA U21 squad came last November. He made his international bow in a 1-0 loss to Serbia four days after an unused appearance in a 1-1 draw with Denmark. By late March, he had scored his first international goal in a 4-1 win over South Korea.

That progress has been matched at club level. He started 27 of his 31 Bundesliga 2 appearances in 2025/26 and played the full 210 minutes of Paderborn's play-off success. Sebastian Lange said he had become a key player in a short space of time, praising his composure, his strength in one-v-ones and the way he plays for the team.

Paderborn's platform

Paderborn were three points clear of third-placed Elversberg after Matchday 31 while pushing for promotion from Bundesliga 2. They finished the job with a 2-0 win over Darmstadt on the final weekend before beating VfL Wolfsburg in the play-offs. The source also describes that play-off success as a 2-1 extra-time win in the second leg, so the exact framing around the tie varies, but the outcome does not: Paderborn went up and Castaneda was central to it.

This season he has not missed a single league minute for Paderborn. Nine Bundesliga appearances have turned into 810 minutes, and he is the only outfield player at the club yet to sit out a minute in the league. He also broke his Bundesliga duck on Matchday 4 with Paderborn's opening goal against Hoffenheim in a 3-1 victory, which fits the broader point around his development rather than sitting beside it.

The USMNT's quarter-final first leg against Haiti has been moved from Kingston to Miami on safety grounds and is scheduled for 14 November, a year to the day since Castaneda's U21 debut. If he gets on the field there, it will be the latest step in a rise that has been built on minutes, trust and a season where he has barely left the team sheet.

Written by Jack Mercer with AI-assisted research, cross-checked against 1 outlet. How we work →