French Open: Teenager Coco Gauff sets up semi-final with Martina Trevisan

American teenager Coco Gauff says her recent high-school graduation was tougher than reaching the semi-finals of the French Open for the first time.

The 18-year-old swept into the French Open semifinals with a win over her friend.

Gauff graduated before the tournament started because she combined her studies with competing.

Was graduating tougher? I know how hard it was to do school and play tennis on the road.

Gauff said that tennis is the most important thing in the world and other players get out of sight with life. It is not.

Getting my high-school graduation meant a lot to me.

Gauff won the French Open junior title in the same year that she finished runner-up to Simona Halep in the women's singles final.

She won the first set at the end of a tight affair and then took control of the second to reach the semi-finals.

'My past is the past' - Trevisan

The 28-year-old became the first person to reach the last four at the French capital after defeating Leylah Fernandez.

The Italian, who is ranked 59 in the world and is named after a tennis player, spent four years away from tennis to battle an eating disorder.

When her father was diagnosed with a disease, she had to be educated to eat and closed herself in.

She said after Tuesday's win that she was happy on the court. My past has helped me to be who I am right now.

The 19-year-old US Open finalist struggled with a foot injury and was defeated by Trevisan.

The 17th seed saved a match point in the second set and won the tie-break comfortably, but she lost the third set and the match.

The world number 59 won her first title on the women's circuit the week before the French Open.