Mariners: 5 worst managers in team history
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3. Del Crandall: 1983-1984 – Record: 93-141 (.415)
Crandall was not just a bad manager for the Mariners, he was a bad manager period. In six seasons between the Brewers and Mariners, he had a .437 winning percentage. Milwaukee fired him in 1975, but Seattle took the risk and signed him after eight seasons away. Crandall managed a year and a half for the Mariners before he was fired for the second time. In neither season did he post a winning record. As bad as he was, he’s not as bad as the next up on this list.