Steffi Graf competed in three grand slams in a calendar year five times.
Steffi Graf . Graf won 22 Grand Slam singles titles . She and Margaret Court are the only players , male or female , to win three grand slams in a calendar year five times ( 1988 , 1989 , 1993 , 1995 and 1996 ) . Graf reached thirteen consecutive Grand Slam singles finals , from the 1987 French Open through to the 1990 French Open , winning nine of them . She won 5 consecutive Majors ( 1988 Australian Open to 1989 Australian Open ) , and seven Majors out of eight , in two calendar years ( 1988 Australian Open to 1989 US Open , except 1989 French Open ) .