Golf: Seve Ballesteros has confirmed he will begin a fourth round of chemotherapy this weekend as he continues to battle a cancerous brain tumour.

The five-time major winner has revealed test results from his third stint of treatment confirmed he could go ahead with a fourth round.

“After completing a third round of chemotherapy, blood tests yesterday confirmed I can go ahead with the fourth round which will start this Saturday,” he said on his website today.

“My spirits are still high.”