Coco Gauff scraps past Madison Keys to reach French Open semi-finals

• No 2 seed recovers to win 6-7 (6), 6-4, 6-1 in patchy match

• Gauff to face Boisson or Andreeva in the last four

Coco Gauff passed her biggest test so far at the French Open as she scrapped her way past fellow American Madison Keys to reach the semi-finals. A scruffy match featuring 101 unforced errors and 14 breaks of serve ended 6-7 (6), 6-4, 6-1 in favour of the world No 2. Gauff had previously not dropped a set as she quietly made her way through the friendlier side of the draw.

In a nervy first set Gauff overturned a 4-1 deficit to force a set point at 5-4, only to be taken to a tie-break, which Keys won. Gauff went 4-1 up in the second but found herself pegged back, before a break and a hold took the match into a decider.