Kultida Woods, the Thai-born mother of Tiger Woods who instilled his dominant spirit and encouraged him to wear a red shirt on Sunday as his power color, died Tuesday. Woods announced the death of his 80-year-old mother in a social media post.

Kultida Woods, the mother of Tiger Woods, golf’s biggest star, died Tuesday, according to the 15-time major winner. He did not provide give her cause of death.

Kultida Woods, mother of Tiger and a bedrock foundation in his life from his earliest moments to his most recent ventures, died early Tuesday morning, the legendary golfer announced. She was 80 years old.