Roger Federer has given a fresh injury update as he eyes a comeback at September's Laver Cup. The 20-time Grand Slam champion has been out of action since Wimbledon last year after

having his third knee surgery in 18 months, and admitted he felt like "a racehorse in a box" while waiting to get his doctor's approval to step up his training even more.

Federer has been sidelined since July, having suffered a "setback" with the knee injury that also kept him out of the 2020 season after the Australian Open. The former world No 1

has since returned to the gym in preparation for his comeback in September, and gave a fresh injury update as he admitting he was raring to go and give a comeback "his all". Asked

the evening after the tough day of training and being completely exhausted." Federer first returned to a proper training schedule last month, and also shared his daily schedule as he

continues to build back up to his best level. JUST IN: NAOMI OSAKA WAS 'VERY WORRIED' ABOUT FRENCH OPEN RETURN "As with a car, you have to turn a thousand screws until the

engine runs smoothly," he said of his training preparations. "Today, mobilisation, stretching, and a warm-up in the morning take about 45 minutes. "Then we drive to the plant.

There follows a warm-up on the pitch, half an hour. After that I eat, stretch, strengthen my ankles with tapes, then warm up again, do gymnastics and explosive speed exercises. Before I

finally play, I took care of my body for two and a half hours." DON'T MISS French Open chief refuses to budge on Nadal after learning 'lesson' Emma Raducanu’s struggles

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