Table:
text: Grand Slam (tennis)
Men's singles
Men's singles
_ Player Age Australian_Open French_Open Wimbledon US_Open
1 Fred Perry 26 1934 1935 1934 1933
2 Don Budge 23 1938 1938 1937 1937
3 Rod Laver 24 1960 1962 1961 1962
4 Roy Emerson 27 1961 1963 1964 1961
5 Andre Agassi 29 1995 1999 1992 1994
6 Roger Federer 27 2004 2009 2003 2004

Question: How many players are on this list for Men's Singles Grand Slam (Tennis)?

Question: Who won the 1999 French Open in men's singles under Grand Slam (tennis)?

Question: Who won the 1937 Grand Slam (tennis) US Open in men's singles?

Question: How many times has Roy Emerson won the Australian Open in Men's Singles Grand Slam (Tennis)?

Question: At what age did Roy Emerson finish the men's tennis Grand Slam?