World number three Rafael Nadal had a difficult Sunday.

He lost the final of the ATP Indian Wells Masters - against 20th-ranked Taylor Fritz - and said afterwards that he was in excruciating pain.

- I was in pain, honestly, he says at the press conference.

Breathing difficulties

Nadal struggled with a foot injury for much of last season and came back in time to win the Australian Open.

Now there is something in his chest that is holding him back.

- I have trouble breathing.

I do not know if there is anything on the rib, I do not know yet.

When I breathe, when I move, it's like a needle all the time in here.

The Spaniard is worried about the gravel season.

- Now it's time to solve this problem as soon as possible, try to start on gravel.

What worries me now, it's about what's going on there, what I have to do now to recover and how long it will take.

CLIP: Rafael Nadal lost in the ATP Indian Wells Masters

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Rafael Nadal lost in the ATP Indian Wells Masters