West Ham defender Winston Reid was taken to hospital after suffering a major knee injury in defeat at Swansea City.
The New Zealand international picked an injury to his right leg during a goal-mouth scramble in the 18 minute at the Liberty Stadium.
The 29-year-old's whole body collapsed onto his leg with his knee buckling underneath him before Declan Rice cleared Federico Fernandez's strike off the line and away for a Swans corner.
Play was suspended for six minutes.
Reid was visibly in a lot of pain as he was attended to by medical staff.
He was eventually carried off on a stretcher, and he was also placed in a neck brace and supplied with oxygen.