Centurion: Duminy scored a maiden century as South Africa beat Zimbabwe by 212 runs in the second match of the series at SuperSport Park on Tuesday.
Duminy hit nine fours and two sixes in an unbeaten 111 from 87 deliveries as South Africa amassed 331-5. Earlier, Jacques Kallis (81) and Graeme Smith (53) had laid the foundations with a century opening stand for South Africa.
Chasing the massive target, Zimbabwe lost wickets at regular intervals and were bowled out 119 after 34.3 overs.
Tatenda Taibu was the only batsman to trouble the home bowling, following his unbeaten century in the first match of the series, and this time he stood firm as others fell around him to post 52.
The victory was the Proteas' biggest winning margin in terms of runs against Zimbabwe.