When Dr Clive Chijioke Nwonka walked into a pub in Manchester to meet up with friends on 28 September 2002, nothing seemed out of the ordinary.
But he was about to watch a moment of footballing and cultural history.
That day Arsenal became the first club to name nine black players in a Premier League starting XI.
Three of that contingent - Thierry Henry, Nwankwo Kanu and Kolo Toure - were on the scoresheet as the Gunners won 4-1 away against Leeds United.
“Their performance heightened the impact of this moment of historical and racial significance," Dr Nwonka, now a professor at University College London, told BBC Africa.