Last 20-30 minutes when we dug in he was good but the hour before that he was awful.
Think he spent more time anywhere but his position. Don't know why it never gets mentioned, particularly from all the pundits who were defenders themselves but the way he regularly vacated centre back without a second thought is woeful.
That chance they had in the first 5 minutes with DCL was all because Dias decided to "sprint" out of position to close down somebody he was never getting to anyway, leaving the centre of the pitch wide open for the chance that should have been taken.
He did it again second half when Nunes made that fantastic last ditch block. he needlessly followed a run down the opposite channel despite the real danger being behind him and knowing he would be leaving a 2v1 there. once he went over, Nunes had to go too which left the space for that chance, luckily Nunes was brilliantly positioned, alert and fast enough to get back over but again it all came from Dias vacating his position.