Liverpool left-back Andy Robertson was elbowed by assistant referee Constantine Hatzidakis in a shocking incident shortly after the half-time whistle of Sunday's Premier League match against Arsenal
The Scotland captain approached the assistant referee who then placed his elbow on Robertson's chin
Robertson was shown a yellow card by referee Paul Tierney while angrily protesting
Arsenal led 2-1 at the break, but Liverpool salvaged a 2-2 draw as Roberto Firmino's header in the 87th minute ended the champions' hopes of winning the title for the first time since 2004.
Hatzidakis is now facing an investigation into his conduct after the PGMOL refereeing board said it would review the incident
"PGMOL is aware of an incident involving assistant referee Constantine Hatzidakis and Liverpool defender Andrew Robertson at half-time during Liverpool's match against Arsenal at Anfield. We will investigate the matter fully," the statement said. >
