Which tennis player played in the Masters, Daniel Vacek or Yan Zi?
Daniel Vacek
Title: Yan Zi (tennis)
Passage: Yan Zi (; ; born November 12, 1984), is a retired Chinese-born Hong Kong female professional tennis player.
Title: Daniel Vacek
Passage: Daniel Vacek (born 1 April 1971) is a former tennis player from Czechoslovakia and the Czech Republic who turned professional in 1990.  He reached the quarterfinals of the 1995 Paris Masters, the 1998 Canada Masters and the 1998 Cincinnati Masters, and achieved a career-high singles ranking of World No. 26 in January 1996.
Title: Yuan Meng
Passage: Yuan Meng (born 9 May 1986) () is a former Chinese female professional tennis player.  She is China's fifth-highest ranked women's singles player after Zheng Jie, Li Na, Peng Shuai, and Yan Zi.  Yuan has won four ITF singles titles and one ITF doubles title.
Daniel Vacek Yan Zi (tennis)