England cricketer Kevin Pietersen is in hospital after a disease attacked him while recovering from another injury.
Pietersen had to have an operation earlier in the summer after a problem with his Achilles tendon stopped him from playing in the Ashes series.
Pietersen tried to play through the pain, but after taking part in two Tests had to have an operation.
Now it seems he's picked up an infection inside the area where the surgeon operated.
Pietersen was never going to be able to play again in the Ashes series, but there were hopes he could take part in the one-day matches with Australia.
This latest blow means that is now very unlikely.
Later in the year, England travel to South Africa to take part in the Champions Trophy tournament and then stay in the country for matches against South Africa themselves.