2005 Seattle Mariners season

Over the course of the disappointing season, the Mariners managed to have their longest winning streak over the course of a four-game series with the Angels (July 7–10), while having two losing streaks of seven between April 30–8 May / June 25 – July 2.

Infielders Coaches Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg.

= Batting average; HR = Home runs; RBI = Runs batted in Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; H = Holds; SV = Saves; ERA = Earned run average; SO = Strikeouts Positions in brackets are in league with other MLB teams Note: G = Games played; AB = At bats; H = Hits; R = Runs; Avg.

The first selection by the Mariners in the Rule 4 draft was catcher Jeff Clement.

The first and only player selected by Seattle in the Rule 5 draft was infielder Jason Bourgeois.