The Mariners played their 17th full season (18th overall) at Safeco Field.
Despite finishing with a winning record of 86–76, they failed to make the playoffs, finishing second place in the American League West.
Infielders Outfielders Coaches (final statistics) Players in bold are on the active roster.
= Batting average; OBP = On-base percentage; SLG = Slugging percentage; SB = Stolen bases (final statistics) Players in bold are on the active roster.
Note: W = Wins; L = Losses; ERA = Earned run average; G = Games pitched; GS = Games started; SV = Saves; IP = Innings pitched; H = Hits allowed; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; K = Strikeouts LEAGUE CHAMPIONS: Jackson, AZL Mariners