South Africa, featuring in Group B of the competition, managed to only beat Sri Lanka, while losing to India and Pakistan as they failed to advance from the group stage.
Despite always being termed as favourites, South Africa haven't won an ICC tournament since the 1998 Champions Trophy triumph in Bangladesh, earning the tagline of 'chokers'.
The right-handed batsman, considered a modern-day cricket great, wrote on Facebook on Tuesday: "We are truly and genuinely sorry about the way we performed in this year's Champions Trophy and we will keep working hard at our game to make it right!"
Pakistan's Victory over India in CT2017 Final was Special
Bowlers failed India, reckons off-spinner Harbhajan Singh
Latest ODI Team Rankings Post Champions Trophy 2017
Sarfraz Ahmed named captain of ICC Champions Trophy 2017 Team
New No.6 Pakistan inch closer to 2019 World Cup direct entry
Gautam Gambhir slams Kashmiri separatist for lauding Pakistan
Pakistan a serious contender for 2019 World Cup, feels Shahid Afridi
CT2017: Top 5 Bowlers
CT2017: Top 5 Batsmen
Pakistan beat India to lift Champions Trophy (Highlights)