Former Oakland Athletics pitcher and special assistant Matt Keough died aged 64, it was announced on Saturday.
Keough went 58-84 with a 4.17 ERA over nine seasons in the major leagues, the first seven coming with the Athletics.
He was an American League All-Star as a rookie in 1978 and was named AL Comeback Player of the Year in 1980 after going 16-13 with a 2.92 ERA.
"Matt was a great baseball man and a proud Oakland A," Billy Beane, the team's executive vice-president of baseball operations, said in a statement following Keough's death on Friday.
"He had an incredible passion for the game and we were lucky to have him and his wealth of knowledge alongside us for the years he worked as a special assistant."
Keough also played for the New York Yankees, Chicago Cubs, St Louis Cardinals and Houston Astros before pitching in Japan from 1987-1990.
After his playing career, Keough served in front-office roles with the Los Angeles Angels and Tampa Bay Devil Rays – now known as the Tampa Bay Rays – in addition to the A's.