Tunisia invited Anas Jabeur to the Madrid Open Women's Tennis Championship from the last eight.
Anas Jabeur did not take advantage of her 6/0 lead against the American Madison Keys, who settled the second and third sets with a score of 7/5 and 6/1.
Keys qualified for the final to face world number one Iga Shviontic of Poland.
Shviontic qualified for the final earlier on Tuesday by beating Brazil's Beatrice Haddad Maya by 4/6, 6/0 and 6/2.