Sussex skipper Chris Adams has undergone knee surgery to repair damage done while training last month.
The former England batsman suffered torn cartilage during a net session.
He is expected to be out of action for a further two weeks.
Adams said: "It's been a very frustrating couple of weeks for me, especially as I was in good form prior to the accident.
"But I will be back playing very shortly, even more determined to make my mark."
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