Hampshire seam bowler Chris Wood could miss the first month of the season after undergoing knee surgery just before Christmas.
The 23-year-old missed the last couple of Championship matches in 2013 because of the problem but rest has not allowed the injury to settle.
It flared up again forcing the left-armer to go under the knife.
"All being well I'll only miss the first four or five weeks," Wood told BBC Radio Solent.
He played in all 13 YB40 games last season when Hampshire lost to Glamorgan in the semi-finals and was their equal-top wicket-taker with Sohail Tanvir on 17.
Wood also played in all 12 of Hampshire's T20 matches last season when they lost to Surrey in the semi-finals, taking 12 wickets, and played nine County Championship matches in which he took 15 wickets.
"I'll definitely miss the first Championship block and I think the aim is to get back for the first Twenty20 game if possible but it is all very up in air," he added.
"It is all flexible in terms of time, it could be a couple weeks early but then again it could be a couple weeks late."