Answer
Lin Dan, a Chinese badminton player, holds the second-longest reign as world number one in men's singles. He held the top spot for 208 consecutive weeks from 2008 to 2012, and then again for 56 weeks from 2013 to 2014. Only Lee Chong Wei of Malaysia has held the world number one ranking for a longer period, with 349 consecutive weeks from 2008 to 2012.