| Club | League | Years |
|---|---|---|
| Hannover 96 | Bundesliga | 2010–2013, 2012 |
| Greuther Fürth | Bundesliga | 2013–2017, 2023–2025 |
| Fortuna Düsseldorf | Bundesliga | 2017–2020 |
| Union Berlin | Bundesliga | 2020–2023 |
Only the clubs in the game are in the data; spells at other clubs, loans and youth years may be missing.
Which club pairs is Niko Gießelmann an answer for?
In Who Played Both, if two of these clubs meet, Niko Gießelmann is one of the right answers.
- Fortuna Düsseldorf – Hannover 96 28 players
- Fortuna Düsseldorf – Greuther Fürth 23 players
- Hannover 96 – Union Berlin 19 players
- Greuther Fürth – Hannover 96 18 players
- Greuther Fürth – Union Berlin 15 players
- Fortuna Düsseldorf – Union Berlin 13 players
Source: Wikidata (CC0), Wikipedia club articles and player infoboxes (years at each club). Youth spells and appearances that look unplayed are left out; volunteer-kept records can contain gaps or errors.