Juan Martin del Potro on Instagram: “Pasé un día increíble ayer en el #usopen. Fue un placer poder entrenar con mi amigo y leyenda John McEnroe y me siento muy agradecido por…”
![Grand Slam Champion Juan Martin Del Potro of Argentina Wears Custom Nike Tennis Shoes during US Open 2017 Match Editorial Photo - Image of championship, jean: 101079036 Grand Slam Champion Juan Martin Del Potro of Argentina Wears Custom Nike Tennis Shoes during US Open 2017 Match Editorial Photo - Image of championship, jean: 101079036](https://thumbs.dreamstime.com/z/grand-slam-champion-juan-martin-del-potro-argentina-wears-custom-nike-tennis-shoes-us-open-match-new-york-september-101079036.jpg)
Grand Slam Champion Juan Martin Del Potro of Argentina Wears Custom Nike Tennis Shoes during US Open 2017 Match Editorial Photo - Image of championship, jean: 101079036
![Grand Slam Champion Juan Martin Del Potro of Argentina Wears Custom Nike Tennis Shoes during US Open 2017 Match Editorial Stock Image - Image of backhand, open: 101079059 Grand Slam Champion Juan Martin Del Potro of Argentina Wears Custom Nike Tennis Shoes during US Open 2017 Match Editorial Stock Image - Image of backhand, open: 101079059](https://thumbs.dreamstime.com/b/new-york-september-grand-slam-champion-juan-martin-del-potro-argentina-wears-custom-nike-tennis-shoes-us-open-match-101079059.jpg)