Sixth seed Ons Jabeur suffered a surprise first-round defeat by Magda Linette on the opening day of the French Open.
The Tunisian arrived at Roland Garros in strong clay-court form but fell 3-6 7-6 (7-4) 7-5 to the 52nd-ranked Pole.
Jabeur was among the favourites for the title, having reached three clay-court finals in the build-up to Paris.
However, it was Linette who held her nerve better on the big points to secure a fine victory.
More to follow.