MADRID " Seve Ballesteros will undergo a fourth round of chemotherapy as he continues treatment of a cancerous brain tumor.
Ballesteros said Thursday that blood tests from his third round of chemotherapy showed that he could continue with the treatment, with the next round scheduled to begin Saturday.
The five-time major winner underwent four brain surgeries to remove the cancerous tumor in October.
Ballesteros said his spirits were "still high," although the 51-year-old golf great did not mention the possibility of a public appearance that he'd been planning to make.