Derby County face Leeds in the play-offs.
Derby County are at risk of being without Martyn Waghorn for the play-off semi-finals against Leeds United.
Waghorn limped off in Derby’s weekend victory over West Bromwich Albion.
Frank Lampard confirmed Waghorn appeared to suffer an Achilles injury.
He told Derbyshire Live: “It is an Achilles’ injury, a sore Achilles, and one to be assessed. Waggy was playing so well in the first half an hour.”
Waghorn had scored before being substituted in the 41st minute.
The Rams agreed a fee to pay up to £7.5 million including add-ons when they bought Waghorn from Ipswich Town last summer.
Waghorn has scored 13 goals and provided three assists in all competitions this season.
Derby host Leeds in the play-offs first leg on Saturday.
Leeds are without their big money forward Patrick Bamford, who is serving the second game of his suspension.
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