Rafael Nadal said Wednesday he is unsure if he will be ready to return to action in Doha next week after he withdrew from the Australian Open with a muscle tear.

Tennis: Rafael Nadal concedes scheduled return in Doha 'very tight'

Former world No-1 Roger Federer lost to clay court specialist Pablo Andujar on Tuesday in his first comeback match in two months at the Geneva Open. Federer, 39, lost to Spain's Andujar 6-4, 4-6, 6-4.

'People expect a lot from me': Federer falls to Spain's Andujar at Geneva Open

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Tennis: Rafael Nadal concedes scheduled return in Doha 'very tight'

'People expect a lot from me': Federer falls to Spain's Andujar at Geneva Open