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Joana Amorim Cortez dos Santos (born 11 January 1979) is a retired Brazilian tennis player. In her career, Cortez won seven singles and 26 doubles titles on the ITF Women's Circuit. On 17 September 2001, she reached her best singles ranking of world No. 204. On 5 November 2001, she peaked at No. 115 in the doubles rankings. Playing for Brazil at the Fed Cup, Cortez had a win–loss record of 23–14. Cortez played and lost two doubles matches in Grand Slam events, at the 2001 US Open and in 2002 in Australia. After retiring from the professional tour, she became a beach tennis player.