The painful memory of losing the Australian Open final still fresh, Rafael Nadal suffered another blow – this time even before the start of a tournament.

Nadal was defeated 6-3, 6-2, 3-6, 6-3 by Switzerland's Stanislas Wawrinka on January 26, and the Spaniard continues to feel the ill effects from that encounter. 

The 13-time Grand Slam champion posted an emotional monologue on his YouTube channel to announce his withdrawal from the ATP tournament in Buenos Aires two days from the event.

Nadal was set to feature in Copa Claro 2014 having played there last in 2005 – his break-through year when he won his first major. But the Spaniard is still plagued by the back injury he picked in Melbourne – and admitted he hadn’t been able to train properly since.

"I wanted to make an announcement that really fills me with sadness. I will not be able to play in the tournament in Buenos Aires," Nadal said quoted in

"Since I came back from the Australian Open with my back injury I have not been able to train.

"It is impossible for me to prepare adequately for a tournament as important as Buenos Aires, so very unfortunately I have to take this decision."

Nadal is scheduled to play next at the Brazilian Rio Open from 17 February before hitting the hard courts at BNP Paribas Open (which he won in 2013)and Sony Open Tennis in the USA.

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