Jack Grealish was punched by a Birmingham City supporter in the 9th minute of their derby match.
“Aston Villa Football Club is appalled by the disgraceful attack on Jack Grealish during today’s game. A red line has been crossed by this cowardly on-field assault on a player, which is unprecedented in English football. We trust the perpetrator will feel the full force of the law and the authorities investigate the circumstances surrounding today’s deplorable incident," read the club's statement on the event.
Chris Smalling was pushed by a supporter later in the day during Manchester United's match with Arsenal.
The Professional Footballers' Association added that they've seen a rise in fan-related violence.
“The PFA is concerned that we’ve seen elements of this type of behaviour coming back into the game, with several high-profile crowd related issues this season. We must address issues of violence and racist chanting – this should include continued efforts with regards to education but be underpinned by strong punishments and sanctions.”