Ian Wright joined West Ham United from Arsenal on this day in 1998, becoming one of 16 players to play for both clubs since the formation of the Premier League 30 years ago!
With Wright's transfer in mind, today's whufc.com quiz asks you to name every player to play a competitive match for both the Hammers and the Gunners since 1992.
There are 18 to get - how many can you name in five minutes?
Good luck!