| Club | League | Years |
|---|---|---|
| Luton Town | Premier League | 1992–1995 |
| Arsenal | Premier League | 1995–1997 |
| West Ham United | Premier League | 1997–1999 |
| Celtic | Scottish Premiership | 2001–2006 |
| Coventry City | Premier League | 2001 |
| West Brom | Premier League | 2006–2008 |
| Norwich City | Premier League | 2007 |
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 John Hartson an answer for?
In Who Played Both, if two of these clubs meet, John Hartson is one of the right answers.
- Coventry City – West Brom 49 players
- Arsenal – West Ham United 45 players
- Coventry City – West Ham United 39 players
- Luton Town – Norwich City 38 players
- Norwich City – West Ham United 38 players
- Luton Town – West Ham United 36 players
- Coventry City – Luton Town 36 players
- Coventry City – Norwich City 35 players
- West Brom – West Ham United 30 players
- Arsenal – Luton Town 29 players
- Norwich City – West Brom 29 players
- Arsenal – Norwich City 28 players
- Celtic – Norwich City 27 players
- Arsenal – West Brom 24 players
- Celtic – Coventry City 24 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.
