| Club | League | Years |
|---|---|---|
| Cardiff City | Premier League | 2004 |
| Middlesbrough | Premier League | 2007–2011 |
| West Ham United | Premier League | 2011–2013 |
| QPR | Premier League | 2013–2014 |
| Norwich City | Premier League | 2014–2016 |
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 Gary O'Neil an answer for?
In Who Played Both, if two of these clubs meet, Gary O'Neil is one of the right answers.
- QPR – West Ham United 46 players
- Cardiff City – Middlesbrough 43 players
- Cardiff City – QPR 40 players
- Norwich City – West Ham United 38 players
- Cardiff City – Norwich City 32 players
- Norwich City – QPR 32 players
- Middlesbrough – Norwich City 27 players
- Cardiff City – West Ham United 24 players
- Middlesbrough – West Ham United 22 players
- Middlesbrough – QPR 20 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.
