Who has won all Grand Slams in a single Calendar year?

Question

11 votes

Answer 1

(A) Novak Djokovic

55% / 6 votes

Answer 2

(B) Roger Federer

18% / 2 votes

Answer 3

(C) Rafael Nadal

27% / 3 votes

Answer 4

(D) Pete Sampras

0% / 0 votes

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