Manchester United fullback Patrice Evra and Liverpool's Luis Suarez will give evidence today in their race row hearing.
Evra complained Suarez racially insulted him 'at least 10 times' during the Liverpool-United clash at Anfield on October 15.
The FA opened the hearing yesterday, and hope to conclude it tonight.
The verdict is expected to be announced in the next 48 hours.
Uruguayan striker Suarez, 24, who strongly denied the claims, faces the prospect of a ban and a big fine if found guilty.
He said: "There are cameras. You can see Suarez say a certain word to me at least 10 times."
But Liverpool insiders say that at worst there has been a mix-up owing to Suarez's limited knowledge of English.
And Suarez commented: "There is no evidence I said anything racist to him. I said nothing of the sort.
"There were two parts of the discussion - one in Spanish, one in English. I did not insult him. It was just a way of expressing myself.
"I called him something his team-mates call him. Even they were surprised by his reaction."Evra insisted there is video evidence to back up his claims.