The bad blood remains between Chelsea striker Diego Costa and Liverpool defender Martin Skrtel.
The Mail on Sunday says they reignited their feud during Chelsea's lunchtime victory at Liverpool.
The pair first clashed during Slovakia's surprise victory against Spain in their Euro 2016 qualifier in October; the Liverpool defender later revealing that former team-mate Luis Suarez taught him expletive words to taunt Costa.
And the duo had to be separated as the teams came off at half-time on Saturday with Liverpool and Chelsea drawing 1-1. Players from both sides got involved with Costa seemingly unhappy with his opponent.
