
Gallacher, who led Europe at the 1991, 1993 and 1995 Ryder Cups, became unwell while giving a speech in his native Scotland.
The 64-year-old, who is the father of Sky Sports News presenter Kirsty Gallacher, is being treated in hospital.
Gallacher turned professional in 1967 and was named the Sir Henry Cotton rookie of the year the following season.
In 1969 he became the youngest winner of the prestigious PGA Championship at 20 years and 97 days, a record which stood until earlier this year when Italian Matteo Manassero triumphed at Wentworth aged 20 years and 37 days.

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