Tottenham manager Harry Redknapp fears William Gallas and Sandro could face long spells out of action after the pair suffered calf injuries in Tuesday's 1-0 win over West Bromwich Albion.
Brazilian midfielder Sandro limped off in the first half at White Hart Lane with a torn calf, while French centre-back Gallas was replaced after the break with a similar injury and Redknapp revealed both will go for scans on Wednesday.
Losing either player for a lengthy period would be a blow to Tottenham's hopes of mounting a serious challenge for the Premier League title.
They are currently six points behind leaders Manchester City with a game in hand and Redknapp said: "Sandro tore a calf, that will be a long one. Gallas as well, it looks like he's done a calf.
"They will have scans tomorrow (Wednesday) and we will have to see how they are."
Redknapp is also currently without England midfielders Scott Parker and Aaron Lennon due to injuries, but he insisted he has no intention of rushing into the transfer market to bolster his squad.
"I don't have any targets at the moment that I would go to the chairman and say we should get," he added.