Giants legend Orlando Cepeda, a baseball Hall of Famer, was rushed to a hospital in the Bay Area on Monday night after being stricken at a Fairfield golf course.

Team spokeswoman Staci Slaughter said late Monday night she had no information on Cepeda’s condition or the nature of his illness, but it is believed to be serious.

She said family members were gathering at the hospital. A Giants spokesman at spring training in Scottsdale, Ariz., said any further updates would come from team officials in San Francisco.

The Fairfield Fire Department confirmed that units were dispatched to the Rancho Solano Golf Course at 6:04 p.m. and transported a patient to the hospital but could not name the patient or his condition.

Cepeda, 80, who lives in Fairfield, seemed in good health last month when he toasted Willie McCovey at McCovey’s 80th birthday party at AT&T Park.

Mirian Ortiz, Cepeda’s wife of 26 years, died from complications related to pneumonia in April at age 62.

Cepeda, known as the “Baby Bull” and “Cha Cha,” broke into the major leagues in 1958, the year the Giants moved to San Francisco from New York. He hit a home run in his second at-bat and became one of the pre-eminent hitters in the game, though overshadowed on his own team by McCovey and Willie Mays.

A first baseman and outfielder, Cepeda was traded to St. Louis in 1966 for pitcher Ray Sadecki in what remains one of the worst trades in club history. Cepeda won the National League Most Valuable Player award the following season in helping the Cardinals win the World Series.

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Cepeda played briefly for the A’s before his 1974 retirement. He was elected to the Hall of Fame in 1999 on a Veterans Committee ballot and has worked for the Giants as a community representative since 1987.

The Giants have retired Cepeda’s uniform number, 30. He is one of five San Francisco greats honored with a statue at AT&T Park, along with McCovey, Mays, Juan Marichal and Gaylord Perry.