Input (grade 6): Chang's most famous match took place at the 1989 French Open (on the way to winning his only Grand Slam singles title). In the fourth round, he faced the World No. 1, reigning Australian Open champion, and three-time former French Open champion Ivan Lendl.
Output (grade 6): When he won the French Open in 1989, Chang had a very famous semi-final match with Ivan Lendl.