Everton boss Roberto Martinez is hopeful Seamus Coleman and Muhamed Besic will recover quickly from their respective injuries.
Midfielder Besic was forced off with a hamstring problem in the opening stages of the Toffees' 3-1 win over Chelsea on Saturday, while defender Coleman was substituted late on with a similar injury.
The duo are considered doubtful for this weekend's trip to Swansea, adding to a casualty list that includes Steven Pienaar, Leighton Baines, Tom Cleverley, Darron Gibson, Bryan Oviedo and Tony Hibbert.
Martinez is awaiting the results of scans to determine the length of Besic and Coleman's absence, but is optimistic the pair will return to action sooner rather than later.
The Spaniard told Everton TV: "Forty-eight hours after the game, we're quite positive in the way Mo and Seamus feel.
"I think Seamus felt a lot better than Mo immediately after the game but we're going to get the scans done today so we have a clear idea.
"I don't think it looks as bad as we feared once it happened but we'll get more information as the week goes on and we'll see how long a period we're looking at for the two players.
"They were the only two to pick up knocks against Chelsea, so everyone else from that squad is fully fit for the weekend."