Rams worry over duo
Defender Tom Naylor and forward Jamie Ward are early injury concerns for Derby ahead of the weekend.
Both players were forced off early in the second half of the 2-0 defeat at Cardiff on Tuesday night, Naylor with a tight hamstring and Ward due to a dead leg.
Manager Nigel Clough hopes they will be fit in time for the trip to Portsmouth.
He said: "We will see how they both are in the next few days but we are hopeful that they will be available on Saturday.
"There was no point risking them once we knew they had problems and it made sense to get them off as quickly as possible to prevent further damage.
"We would like to have them available on Saturday but it is a case of wait and see at the moment."