The pipes backed up on the lower levels of the stadium during Oakland's 10-2 victory, creating a stink and pools of water in the clubhouses used by both teams and the umpires.
The A's and Mariners moved to a higher floor and cleaned up postgame in the locker room occupied by the Oakland Raiders during NFL games.
Coliseum officials said the six-day homestand, which drew 171,756 fans, overtaxed the plumbing system at the 47-year-old stadium.
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