In December 2021, Abdusattorov took part in the 2021 FIDE World Rapid Championship, achieving a preliminary score of 9.5/13 in a four-way tie for first place, while defeating among others the reigning world chess champion Magnus Carlsen.[13] With a subsequent win of 1.5/2 over Ian Nepomniachtchi in the tie-breaks, Abdusattorov won the Rapid Championship and became the youngest Rapid World Champion in history and the youngest World Champion overall in any of the three recognized time control formats.