Zhang Jike
In 2016, Ma Long became the fifth male player to complete a career Grand Slam (winning the Olympics, World Championships, and World Cup), joining Jan-Ove Waldner and Liu Guoliang, Kong Linghui, and Zhang Jike. He held the ranking of number 1 for a total of 64 months (and 34 consecutive months from March 2015), the most by any male player in the history of table tennis. With his Gold Medal win in Men's Singles at the 2020 Tokyo Olympics, Ma Long became the first and the only male player to complete a career Double Grand Slam, cementing his status as one of the greatest table tennis players of all-time.