Victory over Fulham may have come at a cost for Everton.
Louis Saha left on a stretcher in the closing minutes after landing awkwardly.
Manager David Moyes is already without key midfielder Marouane Fellaini for the rest of the season and playmaker Mikel Arteta for a prolonged period.
Moyes said: "It looks as if he landed heavily on his ankle. We will get him X-rayed and see how he is.
"He had a hamstring problem - we were just about to substitute him when he went up for that header and landed awkwardly."
