YDS READING PASSAGES / TEST 6 49. Soru

-17.ICE-BORG

Because of his imperturbable manner, both on and off the tennis court, and his relentless ground strokes, Bjorn Borg was dubbed Ice-Borg by his opponents on the professional circuit. Borg won his first tournament when he was 11. In four years, he won all the world's junior titles, and became the first of the teenage wonders to achieve world-class status. He dropped out of school when he was in the ninth grade, at 15, and qualified for the Swedish Davis Cup team, becoming the youngest player ever to win a cup match. This was his first encounter with team captain Lennart Bergelin, who later became Borg's full-time coach. In 1975 Borg's three match victories, including doubles, brought Sweden its first Davis Cup. In his first decade in competitive tennis, the golden-haired Swede broke more records than anyone else in the history of tennis. Borg was only 26 when he retired, and he failed in his attempt eight years later to make a comeback with his old wooden racket — made obsolete by the oversized models that are now used in the game.

One reason that Bjorn Borg was nicknamed 'Ice-Borg' was that ------ .