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Proteas all-rounder Marco Jansen has undergone surgery on his left thumb after suffering the injury during the World Test Championship final against Australia at Lord's last month.
The 25-year-old will be further assessed in six weeks by the medical team to determine his return-to-play timeline.
Jansen was not included in the national squad for the recent two-match Test series in Zimbabwe that the Proteas won 2-0.
The Proteas take on Zimbabwe and New Zealand in a T20I tri-series in Harare, starting on Monday, with the African teams set to battle in the first clash.
T20I tri-series fixtures:
Monday, 14 July
Zimbabwe vs South Africa - Harare Sports Club
Wednesday, 16 July
South Africa vs New Zealand - Harare Sports Club
Friday, 18 July
Zimbabwe vs New Zealand - Harare Sports Club
Sunday, 20 July
Zimbabwe vs South Africa -- Harare Sports Club
Tuesday, 22 July
New Zealand vs South Africa -- Harare Sports Club
Thursday, 24 July
Zimbabwe vs New Zealand - Harare Sports Club
Saturday, 26 July
Number 1 vs Number 2 - Harare Sports Club
