The South African cricketers' apparent bowling plans against the Black Caps have appeared on Facebook.
They show how the Proteas aim to bowl to each New Zealand batsman in the three match one-day international series which begins tonight in Centurion.
Martin Guptill, Tom Latham, and Colin Munro are labelled as susceptible to bouncers, while captain Kane Williamson is described as a poor puller of the ball.
The plans describe George Worker and Luke Ronchi as compulsive pullers, and Nathan McCullum as a player who often gets caught at deep square leg.
A hotel guest in Centurion claimed the plans were slipped under her door.
The series is the first time the Black Caps have locked horns with the Proteas in 50-over cricket since their thrilling World Cup semi-final at Eden Park.