Who among the following won all four grand slam in one calender year?
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Rod Laver
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Roger Federer
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Pete Sampras
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Andre Aagassi
A
Correct answer
Explanation
Rod Laver is the only tennis player in history to win the calendar Grand Slam (all four majors in one year) twice - once as an amateur in 1962 and once as a professional in 1969. Roger Federer, Pete Sampras, and Andre Agassi all won multiple majors but never achieved the calendar Grand Slam. Note: Option D has a typo ('Aagassi' instead of 'Agassi').