Andrea Tiezzi  Andrea Tiezzi Rojas (born 26 November 1964) is an Argentine former professional tennis player. Tiezzi, a top-10 junior, played on the professional tour in the 1980s and early 1990s. At the 1987 Pan American Games in Indianapolis, Tiezzi won silver medals for Argentina in both the women's doubles and mixed doubles events. She featured once in the singles main draw of a grand slam tournament, as a qualifier at the 1988 French Open. Her best performance on the WTA Tour was a quarter-final appearance at Guaruja in 1989.