 Later law changes , under the heading of " <unk> Short <unk> <unk> " , also restricted the number of " bouncers " which may be bowled in an over . Nevertheless , the tactic of intimidating the batsman is still used to an extent that would have been shocking in 1933 , although it is less dangerous now because today 's players wear helmets and generally far more protective gear . The West Indies teams of the 1980s , which regularly fielded a bowling attack comprising some of the best fast bowlers in cricket history , were perhaps the most feared <unk> . 
