Rafael Nadal shrugs off fresh concerns over his fitness

Rafael Nadal has shrugged off new concerns over his fitness as he targets a place in an eighth Wimbledon semi-final on Wednesday while Nick Kyrgios plays in the shadow of fresh controversy.

In Nadal's last-16 clash against Botic van de Zandschulp, the 36-year-old had strapping across his abdomen.

Only last month, he won a 14th French Open with his troublesome left foot anaesthetised.

"I'm a little bit tired to talk about my body, all the issues that I am having," said 22-time Grand Slam title winner Nadal who has never lost a Wimbledon quarter-final.

"I prefer to not talk about that now. For the moment I am healthy enough to keep going and fight for the things that I want."

Nadal is halfway to the first calendar Grand Slam by a man since Rod Laver in 1969.

On Wednesday, he will seek to reach the semi-finals for the eighth time when he faces in-form Taylor Fritz.

The American is in the last eight of a Slam for the first time and has yet to drop a set. He warmed up for Wimbledon by claiming the grasscourt title at Eastbourne.

The 24-year-old defeated Nadal in the Indian Wells Masters final earlier this year when the Spaniard was suffering from a cracked rib.