About Zhang Jike
Zhang Jike (Chinese: 张继科; pinyin: Zhāng Jìkē; born 16 February 1988) is a retired Chinese table tennis player. Zhang became the fourth male player in the history of table tennis to achieve a career Grand Slam when he won gold in men's singles at the Olympic games in London 2012. The first three are Jan-Ove Waldner (in 1992), Liu Guoliang (in 1999), and Kong Linghui (in 2000). Zhang won the Grand Slam in only 445 days. He won, consecutively, first WTTC 2011, then World Cup 2011, and then London Olympics 2012, which made him the fastest player ever to win a Grand Slam. After the first Grand Slam, he won WTTC 2013 and World Cup 2014.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.