Brentford goalkeeper Thomas Strakosha faces a fortnight out after saving a penalty in training.
The Albanian international reacted superbly to stop Kristoffer Ajer's spotkick in training, but hurt himself in the process.
Manager Thomas Frank explained the incident at his Thursday press conference, saying: "He made an unbelievable penalty save and was very unfortunate to get injured with an ankle ligament injury so he's out for two weeks."
Strakosha joined the Bees on a free transfer in the summer following the expiry of his contract with Lazio.