10.Jeffery Xiong, USA (rating 2666) Jeffery Xiong (born October 30, 2000) is a United States chess Grandmaster and child prodigy. In February 2016 he entered the top 10 players in the world under age 20 and a month later, he reached a FIDE rating of 2600 for the first time. In July 2016, Xiong won the B group (“Premier”) of […]