VANDALS entered Tavistock Tennis Club and smashed wine glasses and trophies last Sunday.
The culprits, believed to be local teenagers, entered the combination code on the lock before causing damage estimated at £30 to £40, said club spokesman David Isaac.
He said the incident occurred between 4.30 and 6.30 in the afternoon.
Anyone with information relating to the crime is asked to contact the club or Tavistock police.