Nelson Weiper

Weiper is a product of the youth academy of Mainz 05, having joined as an U8. Working his way up all their youth categories, he signed a professional contract with the club on 18 March 2022. He made his senior debut in the Bundesliga as a late substitute for Mainz in a 2–1 loss to Freiburg on 1 October 2022. He won the 2022 U17 Fritz Walter Medal, an award for the most outstanding German youth prospect in their age group. He played a huge part in helping the Mainz 05 U19 side win the U19 Bundesliga in the 2022–23 season. On 24 February 2023, Weiper netted his first senior Bundesliga goal in a 4–0 win over Borussia Mönchengladbach. After registering three goals and two assists in the 2024–25 Bundesliga season, as well as four goals in the Under-21 Euros for Germany, Mainz coach Bo Henriksen predicted that Weiper would score 15 goals in the 2025–26 season, after having predicted 20 goals for teammate Jonathan Burkardt the previous season, who eventually scored 18. On 28 August 2025, Weiper would score his first European and season goal in a 4–1 win over Norwegian side Rosenborg, in the UEFA Conference League playoffs, helping his team qualify for the final tournament. On 23 October, he'd score the winning goal in a 1–0 victory over Croatian side Zrinjski, in the Conference League league phase. He would reach the quarter-final with Mainz, eventually getting knocked out by RC Straßburg 4–2 on aggregate. He'd finish his season with only two European and no domestic goals scored…

Weiper is a youth international for Germany, having played for the Germany U17s and U18s. He was prolific with the U17s, scoring 13 goals in 15 games. He took part at the UEFA Under-21 Championship in 2025, scoring 4 goals against England, Italy and France, including a goal in the final, which Germany lost 2–3. He finished third-highest topscorer of the tournament, behind Harvey Elliott (5 goals) and teammate Nick Woltemade (6 goals).

As of match played 5 September 2026

Weiper was born in Germany to a German father and an Albanian mother from the city of Kuçovë. His brother, Henrik, is also a footballer and youth international for Albania and Kosovo.