Question: has anyone won all 4 tennis majors in one year

Answer: Yes, In terms of the current four majors, the first to win all four in a single year was Don Budge, who completed the feat in 1938. To date, 17 players have completed a Grand Slam, though only six in the most prestigious singles titles. Of these players, three have won multiple majors: Rod Laver accomplished the feat twice in men's singles; Margaret Court accomplished the feat three times, in two different disciplines -- once in women's singles and twice in mixed doubles; and Esther Vergeer completed a grand slam twice in Women's wheelchair doubles.