Frenchwoman Boisson surprises again at Roland Garros: in the semifinals after beating Andreeva. Now Gauff

French revelation Lois Boisson - world number 361 at the start of the tournament, now a virtual 65 - surprised again by beating the very young Russian champion Mirra Andreeva 7-6 6-3.

Previously Coco Gauff had flown to the semifinals at Roland Garros. On the red clay of Paris, the young woman from Atlanta won the US derby with Madison Keys, winning with a score of 6-7 6-4 6-1.