A South African run-down of the Black Caps’ batting strengths and weaknesses has been revealed just hours ahead of the first one-day cricket international in Centurion.

The schedule, addressed to pace man Dale Steyn, was instead slipped under the door of a hotel guest, who posted it on Facebook.

It details areas to bowl, how various batsmen cope with bouncers, and the best options for bowling in the final overs.

In-form opener Martin Guptill is seen as a wicket option for bouncers angling in, while skipper Kane Williamson will be targeted as a batsman who doesn’t pull well.

Allrounder Grant Elliott, whose second-to-last ball six at Eden Park blasted New Zealand into the World Cup final earlier this year, requires yorkers angling in at the death while bouncers are seen as a dot ball option.

Both newcomer George Worker and wicketkeeper Luke Ronchi are both seen as compulsive pullers and hookers.

The Black Caps, resting several key players, shared honours in the two-match Twenty20 series against the Proteas, losing the first by six wickets before taking a 32-run in the second on Sunday.

Steyn didn’t play in either match.

The first of three one-dayers starts on Wednesday.