Plymouth defender Reda Johnson faces a race to be fit for Saturday's home Championship clash against play-off chasing Leicester.
Johnson suffered foot and hip injuries during Argyle's 1-1 home draw with Swansea on Tuesday and missed training on Thursday.
However, Argyle head coach Paul Mariner is not ruling the Benin international centre-half out of his Saturday plans.
Winger Alan Judge is set to be back in contention for Saturday's clash after missing out on Tuesday.
Mariner said: "Alan was a bit under the weather ahead and that sort of made my mind up about Tuesday."
Winger Craig Noone (knee) is also back in contention after missing the draw with Swansea but defender David McNamee (groin) is again ruled out by injury.
Leicester have no new problems as they prepare for their second trip to the West Country this week.
Foxes boss Nigel Pearson named an unchanged team against Bristol City on Tuesday night and, after being pleased with his side`s performance in the 1-1 draw at Ashton Gate, could select the same starting XI for the third straight Championship game.
However, on loan full-back Ryan McGivern, midfielders Nolberto Solano and Nicky Adams and forwards Yann Kermorgant, Dany N`Guessan and Steve Howard will all be trying to force their way back into the side.
Leading scorer Matty Fryatt is recovering from surgery on the broken jaw he suffered last week and will be on the sidelines for around eight weeks.
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