Tiger Woods has suffered from major back problems during his career, and underwent surgery for this no less than four times between 2014 and 2016.

Now he has once again operated on his back, he announces on Twitter.

This means that he will miss at least two scheduled competitions in the coming month, the statement says.

However, he is determined to come back.

- I look forward to starting training and am focused on getting back on the tour, says Woods, who has been world number one for no less than 683 weeks in total.

CLIP: Here Tiger hits the water three times - on the same hole (15/11)

Javascript is disabled

Javascript must be turned on to play video

Read more about browser support

The browser is not supported

SVT does not support playback in your browser.

We therefore recommend that you switch to another browser.

Read more about browser support

Here Tiger hits the water three times - on the same hole