Naomi Osaka admits she felt ungrateful in her attitude towards playing tennis

Naomi Osaka admitted that at times over the last year she felt “ungrateful” about feeling that playing tennis on the world stage was not enough of an accomplishment in itself (Nigel French/PA)

Naomi Osaka has admitted that at times over the last year she felt ungrateful about feeling that playing tennis on the world stage was not enough of an accomplishment in itself.

The world number two and second seed fought back from a set and a break down to beat American teenager Coco Gauff 4-6 6-3 6-4 in the second round at the Western and Southern Open.