Marin Cilic, Coco Gauff and 1968 French Open champion Nancy Richey

We continue to celebrate 50 years of Open tennis with American Nancy Richey, 1968 French Open champion and a tennis trailblazer. We catch up with newlywed Marin Cilic, 2014 US Open Champion, and – prior to her impressive run to the Roland Garros Girls’ Singles championship – spent some time with 14-year-old US player Coco Gauff.