FILE - In this Oct. 4, 1978 file photo, Los Angeles Dodgers pitcher Bob Welch winds up to throw to the Philadelphia Phillies in a National League playoff game at Philadelphia. Welch, former All-Star pitcher with the Los Angeles Dodgers and the Oakland Athletics has died. The two-time All-Star and Cy Young award winner was found dead at his home in Seal Beach, Calif. He was 57. (AP Photo/Rusty Kennedy, File)
OAKLAND, Calif. (AP) — Bob Welch, the 1990 AL Cy Young Award winner of the Oakland Athletics and the last major leaguer to win at least 25 games in a season, has died. He was 57.
He died Monday night in Seal Beach, California, of unknown causes, the team said Tuesday.
"He was a legendary pitcher who enjoyed many of his best seasons with the Oakland A's," A's President Michael Crowley said in a statement. "He will always be a significant part of our franchise's history."
Welch was a prominent member of the Oakland teams that won three straight AL championships from 1988-90, including the 1989 club that swept the San Francisco Giants in the earthquake-interrupted World Series. He won the Cy Young Award after going 27-6 with a 2.95 ERA.
Welch finished 211-146 with 3.47 ERA in 17 seasons with the Los Angeles Dodgers (1978-87) and Athletics (1988-94). He also was the pitching coach for the Arizona Diamondbacks when they won the 2001 World Series and has served as a special instructor for the A's in recent years.
"This is a sad day for the entire A's organization," general manager Billy Beane said. "Those of us who knew Bob as a teammate and a friend will miss him greatly."
A's left-hander Sean Doolittle wrote on Twitter: "Devastated to learn of Bob Welch's passing. The A's organization lost not only one of its best pitchers, but one of its best people
Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.