SAN FRANCISCO (AP) – Pat Dobson, one of four pitchers to win 20 games for the Baltimore Orioles in 1971, has died. He was 64.

Dobson died Wednesday night in the San Diego area, the San Francisco Giants said Thursday. He was a special assistant to Giants general manager Brian Sabean this year, his ninth with the club.

The team didn’t immediately know the cause of death.

Dobson went 20-8 with a 2.90 ERA for the AL champion Orioles in 1971, rounding out a famous rotation that also included Hall of Famer Jim Palmer (20-9), Dave McNally (21-5) and Mike Cuellar (20-9). The 1920 Chicago White Sox are the only other team in major league history to have four 20-game winners.

An All-Star with Baltimore in 1972, Dobson was 122-129 with a 3.54 ERA in 11 major league seasons and won a World Series ring with the 1968 Detroit Tigers. He also pitched for San Diego, Atlanta, the New York Yankees and Cleveland.

Dobson spent eight seasons as a big league pitching coach for Milwaukee (1982-84), San Diego (1988-90), Kansas City (1991) and Baltimore (1996).

He joined the Giants in 1997 and served as an advance scout before becoming a special assistant to Sabean.

Dobson’s bio in San Francisco’s media guide said he was living in El Cajon. He was born on Feb. 12, 1942, in Depew, N.Y., and is survived by wife Kathe and six children: Pat III, Nancy, Stacy, Chris, Shannon and Stephanie.

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