Crystal Palace manager Alan Pardew has called on the club's supporters to use social media to name and shame anyone caught throwing coins - allowing him to focus on picking a team to beat Arsenal tomorrow.
Unsavoury incidents in Palace's last two home games have seen missiles thrown towards opposing players, with Newcastle skipper Fabricio Coloccini caught on the face in his side's 1-1 Premier League draw last week.
"It is a big concern for the football club because you don't want it," Pardew said. He hailed the impact social media played in highlighting the behaviour of a number of Chelsea fans on the Paris Metro.
"The incident with Chelsea in Paris gives you the strength of social media."