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AB de Villiers of South Africa holds the record for fastest ODI century (from 31 balls), made against the West Indies in January 2015 (beatingCorey Anderson of New Zealand's previous record of 100 from 36 balls).
31 balls: South Africa captain AB de Villiers claimed three records in just one innings against the West Indies in Johannesburg today. Having hit the fastest ODI fifty off 16 balls (taking over from Sanath Jayasuriya;s 17 in 1996), AB completed his hundred in just 31 balls—improving the world record by Corey Anderson by an incredible five balls.