| 59-103 | Missed Playoffs |
| Record | Outcome |
The Seattle Mariners finished the regular season with a 59-103 record. They went 36-45 at home and 23-58 on the road.
The 1980 Seattle Mariners played in the West Division of the American League.
During the regular season, the 1980 Seattle Mariners went 30-48 against their AL West opponents.
| Opponent | Record | Win Percentage % | Run Differential |
|---|---|---|---|
| Chicago White Sox | 7-6 | 53.8% | +25 |
| Kansas City Royals | 6-7 | 46.2% | +10 |
| Minnesota Twins | 6-7 | 46.2% | -19 |
| Oakland Athletics | 5-8 | 38.5% | -28 |
| Texas Rangers | 4-9 | 30.8% | -21 |
| California Angels | 2-11 | 15.4% | -21 |
No, the Mariners didn't make the Postseason in 1980.
The Seattle Mariners finished the regular season with a run differential of -183. Based on their run differential and their pythagorean expectation, the Mariners could have been expected to have about 61.8 wins, or a 62-100 record in the regular season.
In one-run games, or games that went into extra innings, the 1980 Seattle Mariners went 22-33.
During the regular season, the 1980 Seattle Mariners went 9-9 in extra inning games.
The longest win streak during the regular season for the 1980 Seattle Mariners was a 6 game winning streak.
The longest losing streak that the Seattle Mariners had during the 1980 regular season was 12 games, which happened once during the season.
= Playoff Team
Bold = Division Opponent
| Date | Opponent | Score | |
|---|---|---|---|
| Regular Season | |||
| Wed, Apr 9, 1980 Wed, Apr 9 | vs Toronto Blue Jays | Win 8 - 6 | |
| Fri, Apr 11, 1980 Fri, Apr 11 | vs Toronto Blue Jays | Loss 7 - 10 | (11) |
| Sat, Apr 12, 1980 Sat, Apr 12 | vs Toronto Blue Jays | Win 3 - 2 | (10) |
| Sun, Apr 13, 1980 Sun, Apr 13 | vs Toronto Blue Jays | Win 5 - 1 | |
| Mon, Apr 14, 1980 Mon, Apr 14 | @ Oakland Athletics | Win 7 - 1 | |
| Tue, Apr 15, 1980 Tue, Apr 15 | @ Oakland Athletics | Loss 3 - 12 | |
| Wed, Apr 16, 1980 Wed, Apr 16 | @ Oakland Athletics | Loss 1 - 6 | |
| Thu, Apr 17, 1980 Thu, Apr 17 | vs Minnesota Twins | Win 4 - 3 | |
| Fri, Apr 18, 1980 Fri, Apr 18 | vs Minnesota Twins | Win 3 - 1 | |
| Fri, Apr 18, 1980 Fri, Apr 18 | vs Minnesota Twins | Win 3 - 2 | |
| Sat, Apr 19, 1980 Sat, Apr 19 | vs Minnesota Twins | Loss 3 - 8 | |
| Sun, Apr 20, 1980 Sun, Apr 20 | vs Minnesota Twins | Loss 3 - 4 | |
| Mon, Apr 21, 1980 Mon, Apr 21 | vs Oakland Athletics | Loss 2 - 4 | |
| Tue, Apr 22, 1980 Tue, Apr 22 | vs Oakland Athletics | Win 5 - 4 | |
| Wed, Apr 23, 1980 Wed, Apr 23 | vs Oakland Athletics | Loss 2 - 5 | |
| Fri, Apr 25, 1980 Fri, Apr 25 | vs California Angels | Loss 3 - 4 | |
| Sat, Apr 26, 1980 Sat, Apr 26 | vs California Angels | Loss 6 - 7 | |
| Sun, Apr 27, 1980 Sun, Apr 27 | vs California Angels | Win 7 - 3 | |
| Mon, Apr 28, 1980 Mon, Apr 28 | @ Minnesota Twins | Win 6 - 4 | |
| Tue, Apr 29, 1980 Tue, Apr 29 | @ Minnesota Twins | Win 5 - 3 | |
| Wed, Apr 30, 1980 Wed, Apr 30 | @ Minnesota Twins | Loss 3 - 10 | |
| Thu, May 1, 1980 Thu, May 1 | @ California Angels | Loss 1 - 2 | |
| Fri, May 2, 1980 Fri, May 2 | @ California Angels | Loss 1 - 3 | |
| Sat, May 3, 1980 Sat, May 3 | @ California Angels | Win 2 - 0 | |
| Sun, May 4, 1980 Sun, May 4 | @ California Angels | Loss 3 - 4 | |
| Tue, May 6, 1980 Tue, May 6 | vs Detroit Tigers | Loss 5 - 9 | |
| Wed, May 7, 1980 Wed, May 7 | vs Detroit Tigers | Win 7 - 6 | (10) |
| Thu, May 8, 1980 Thu, May 8 | vs Detroit Tigers | Win 4 - 3 | |
| Fri, May 9, 1980 Fri, May 9 | vs Cleveland Indians | Loss 1 - 4 | |
| Sat, May 10, 1980 Sat, May 10 | vs Cleveland Indians | Loss 3 - 5 | |
| Sun, May 11, 1980 Sun, May 11 | vs Cleveland Indians | Win 9 - 4 | |
| Wed, May 14, 1980 Wed, May 14 | @ Toronto Blue Jays | Win 7 - 0 | |
| Thu, May 15, 1980 Thu, May 15 | @ Toronto Blue Jays | Loss 0 - 1 | |
| Fri, May 16, 1980 Fri, May 16 | @ Chicago White Sox | Win 4 - 2 | |
| Sat, May 17, 1980 Sat, May 17 | @ Chicago White Sox | Loss 0 - 4 | |
| Sun, May 18, 1980 Sun, May 18 | @ Chicago White Sox | Loss 5 - 6 | |
| Mon, May 19, 1980 Mon, May 19 | vs Milwaukee Brewers | Win 4 - 3 | (12) |
| Tue, May 20, 1980 Tue, May 20 | vs Milwaukee Brewers | Loss 5 - 14 | |
| Wed, May 21, 1980 Wed, May 21 | vs Milwaukee Brewers | Win 6 - 5 | |
| Fri, May 23, 1980 Fri, May 23 | vs Chicago White Sox | Win 8 - 0 | |
| Sat, May 24, 1980 Sat, May 24 | vs Chicago White Sox | Win 5 - 4 | |
| Sun, May 25, 1980 Sun, May 25 | vs Chicago White Sox | Win 8 - 3 | |
| Mon, May 26, 1980 Mon, May 26 | @ Milwaukee Brewers | Loss 1 - 11 | |
| Tue, May 27, 1980 Tue, May 27 | @ Milwaukee Brewers | Loss 1 - 4 | |
| Wed, May 28, 1980 Wed, May 28 | @ Milwaukee Brewers | Loss 0 - 7 | |
| Fri, May 30, 1980 Fri, May 30 | @ Cleveland Indians | Win 4 - 3 | (10) |
| Sat, May 31, 1980 Sat, May 31 | @ Cleveland Indians | Loss 2 - 5 | |
| Sun, Jun 1, 1980 Sun, Jun 1 | @ Cleveland Indians | Win 8 - 7 | |
| Tue, Jun 3, 1980 Tue, Jun 3 | @ Detroit Tigers | Loss 2 - 4 | |
| Wed, Jun 4, 1980 Wed, Jun 4 | @ Detroit Tigers | Loss 2 - 8 | |
| Fri, Jun 6, 1980 Fri, Jun 6 | vs New York Yankees | Loss 0 - 3 | |
| Sat, Jun 7, 1980 Sat, Jun 7 | vs New York Yankees | Loss 0 - 1 | |
| Sun, Jun 8, 1980 Sun, Jun 8 | vs New York Yankees | Win 5 - 0 | |
| Mon, Jun 9, 1980 Mon, Jun 9 | vs Boston Red Sox | Win 8 - 7 | (13) |
| Tue, Jun 10, 1980 Tue, Jun 10 | vs Boston Red Sox | Loss 4 - 5 | (11) |
| Wed, Jun 11, 1980 Wed, Jun 11 | vs Boston Red Sox | Loss 5 - 7 | |
| Thu, Jun 12, 1980 Thu, Jun 12 | vs Baltimore Orioles | Loss 1 - 4 | |
| Fri, Jun 13, 1980 Fri, Jun 13 | vs Baltimore Orioles | Win 7 - 6 | |
| Sat, Jun 14, 1980 Sat, Jun 14 | vs Baltimore Orioles | Win 9 - 8 | |
| Sun, Jun 15, 1980 Sun, Jun 15 | vs Baltimore Orioles | Loss 3 - 9 | |
| Mon, Jun 16, 1980 Mon, Jun 16 | @ New York Yankees | Loss 3 - 6 | |
| Tue, Jun 17, 1980 Tue, Jun 17 | @ New York Yankees | Loss 2 - 8 | |
| Wed, Jun 18, 1980 Wed, Jun 18 | @ Boston Red Sox | Loss 2 - 6 | |
| Thu, Jun 19, 1980 Thu, Jun 19 | @ Boston Red Sox | Loss 0 - 2 | |
| Fri, Jun 20, 1980 Fri, Jun 20 | @ Baltimore Orioles | Win 3 - 1 | |
| Sat, Jun 21, 1980 Sat, Jun 21 | @ Baltimore Orioles | Loss 0 - 9 | |
| Sun, Jun 22, 1980 Sun, Jun 22 | @ Baltimore Orioles | Win 7 - 5 | |
| Tue, Jun 24, 1980 Tue, Jun 24 | @ Texas Rangers | Loss 4 - 5 | |
| Wed, Jun 25, 1980 Wed, Jun 25 | @ Texas Rangers | Loss 1 - 6 | |
| Thu, Jun 26, 1980 Thu, Jun 26 | @ Texas Rangers | Win 8 - 4 | |
| Fri, Jun 27, 1980 Fri, Jun 27 | vs Kansas City Royals | Loss 1 - 2 | |
| Sat, Jun 28, 1980 Sat, Jun 28 | vs Kansas City Royals | Loss 2 - 4 | |
| Sun, Jun 29, 1980 Sun, Jun 29 | vs Kansas City Royals | Win 7 - 2 | |
| Mon, Jun 30, 1980 Mon, Jun 30 | vs Texas Rangers | Loss 5 - 11 | |
| Tue, Jul 1, 1980 Tue, Jul 1 | vs Texas Rangers | Win 6 - 5 | |
| Wed, Jul 2, 1980 Wed, Jul 2 | vs Texas Rangers | Loss 3 - 6 | |
| Thu, Jul 3, 1980 Thu, Jul 3 | @ Kansas City Royals | Win 13 - 2 | |
| Fri, Jul 4, 1980 Fri, Jul 4 | @ Kansas City Royals | Loss 3 - 5 | |
| Sat, Jul 5, 1980 Sat, Jul 5 | @ Kansas City Royals | Loss 4 - 5 | |
| Sun, Jul 6, 1980 Sun, Jul 6 | @ Kansas City Royals | Win 5 - 3 | |
| Thu, Jul 10, 1980 Thu, Jul 10 | vs Minnesota Twins | Loss 4 - 12 | |
| Fri, Jul 11, 1980 Fri, Jul 11 | vs Minnesota Twins | Loss 3 - 6 | |
| Sat, Jul 12, 1980 Sat, Jul 12 | @ Minnesota Twins | Loss 3 - 8 | |
| Sun, Jul 13, 1980 Sun, Jul 13 | @ Minnesota Twins | Loss 6 - 7 | (13) |
| Mon, Jul 14, 1980 Mon, Jul 14 | @ Minnesota Twins | Win 8 - 5 | |
| Wed, Jul 16, 1980 Wed, Jul 16 | vs Toronto Blue Jays | Loss 0 - 5 | |
| Thu, Jul 17, 1980 Thu, Jul 17 | vs Toronto Blue Jays | Win 5 - 3 | |
| Fri, Jul 18, 1980 Fri, Jul 18 | vs Detroit Tigers | Loss 3 - 5 | (10) |
| Sat, Jul 19, 1980 Sat, Jul 19 | vs Detroit Tigers | Loss 3 - 5 | (10) |
| Sun, Jul 20, 1980 Sun, Jul 20 | vs Detroit Tigers | Loss 2 - 5 | |
| Mon, Jul 21, 1980 Mon, Jul 21 | vs Cleveland Indians | Win 7 - 0 | |
| Tue, Jul 22, 1980 Tue, Jul 22 | vs Cleveland Indians | Loss 0 - 4 | |
| Wed, Jul 23, 1980 Wed, Jul 23 | vs Cleveland Indians | Loss 6 - 12 | (11) |
| Fri, Jul 25, 1980 Fri, Jul 25 | @ Toronto Blue Jays | Loss 3 - 5 | |
| Sat, Jul 26, 1980 Sat, Jul 26 | @ Toronto Blue Jays | Win 7 - 2 | |
| Sat, Jul 26, 1980 Sat, Jul 26 | @ Toronto Blue Jays | Loss 5 - 7 | |
| Sun, Jul 27, 1980 Sun, Jul 27 | @ Toronto Blue Jays | Loss 0 - 5 | |
| Mon, Jul 28, 1980 Mon, Jul 28 | @ Cleveland Indians | Loss 3 - 7 | |
| Tue, Jul 29, 1980 Tue, Jul 29 | @ Cleveland Indians | Loss 2 - 7 | |
| Wed, Jul 30, 1980 Wed, Jul 30 | @ Cleveland Indians | Loss 2 - 5 | |
| Fri, Aug 1, 1980 Fri, Aug 1 | @ Detroit Tigers | Loss 0 - 1 | |
| Fri, Aug 1, 1980 Fri, Aug 1 | @ Detroit Tigers | Loss 2 - 5 | |
| Sat, Aug 2, 1980 Sat, Aug 2 | @ Detroit Tigers | Loss 3 - 9 | |
| Sun, Aug 3, 1980 Sun, Aug 3 | @ Detroit Tigers | Loss 3 - 4 | |
| Mon, Aug 4, 1980 Mon, Aug 4 | @ California Angels | Loss 3 - 8 | |
| Tue, Aug 5, 1980 Tue, Aug 5 | @ California Angels | Loss 4 - 5 | |
| Wed, Aug 6, 1980 Wed, Aug 6 | @ California Angels | Loss 3 - 8 | |
| Fri, Aug 8, 1980 Fri, Aug 8 | @ Oakland Athletics | Win 2 - 1 | (10) |
| Sat, Aug 9, 1980 Sat, Aug 9 | @ Oakland Athletics | Loss 1 - 2 | |
| Sun, Aug 10, 1980 Sun, Aug 10 | @ Oakland Athletics | Win 2 - 1 | (14) |
| Sun, Aug 10, 1980 Sun, Aug 10 | @ Oakland Athletics | Loss 1 - 6 | |
| Tue, Aug 12, 1980 Tue, Aug 12 | vs California Angels | Loss 6 - 9 | |
| Wed, Aug 13, 1980 Wed, Aug 13 | vs California Angels | Loss 4 - 10 | (10) |
| Thu, Aug 14, 1980 Thu, Aug 14 | vs California Angels | Loss 1 - 2 | |
| Fri, Aug 15, 1980 Fri, Aug 15 | vs Oakland Athletics | Loss 3 - 11 | |
| Sat, Aug 16, 1980 Sat, Aug 16 | vs Oakland Athletics | Loss 3 - 8 | |
| Sun, Aug 17, 1980 Sun, Aug 17 | vs Oakland Athletics | Win 4 - 3 | |
| Tue, Aug 19, 1980 Tue, Aug 19 | vs New York Yankees | Loss 1 - 3 | |
| Wed, Aug 20, 1980 Wed, Aug 20 | vs New York Yankees | Loss 4 - 6 | |
| Thu, Aug 21, 1980 Thu, Aug 21 | vs New York Yankees | Win 6 - 4 | |
| Fri, Aug 22, 1980 Fri, Aug 22 | vs Boston Red Sox | Loss 0 - 1 | |
| Sat, Aug 23, 1980 Sat, Aug 23 | vs Boston Red Sox | Win 3 - 1 | |
| Sun, Aug 24, 1980 Sun, Aug 24 | vs Boston Red Sox | Loss 7 - 10 | |
| Mon, Aug 25, 1980 Mon, Aug 25 | vs Baltimore Orioles | Win 10 - 5 | |
| Tue, Aug 26, 1980 Tue, Aug 26 | vs Baltimore Orioles | Win 2 - 1 | |
| Thu, Aug 28, 1980 Thu, Aug 28 | @ New York Yankees | Loss 5 - 6 | |
| Fri, Aug 29, 1980 Fri, Aug 29 | @ New York Yankees | Loss 1 - 5 | |
| Sat, Aug 30, 1980 Sat, Aug 30 | @ New York Yankees | Loss 3 - 9 | |
| Sun, Aug 31, 1980 Sun, Aug 31 | @ New York Yankees | Win 1 - 0 | |
| Mon, Sep 1, 1980 Mon, Sep 1 | @ Baltimore Orioles | Loss 4 - 5 | |
| Tue, Sep 2, 1980 Tue, Sep 2 | @ Baltimore Orioles | Loss 4 - 10 | |
| Wed, Sep 3, 1980 Wed, Sep 3 | @ Baltimore Orioles | Loss 1 - 5 | |
| Thu, Sep 4, 1980 Thu, Sep 4 | @ Boston Red Sox | Win 7 - 4 | |
| Fri, Sep 5, 1980 Fri, Sep 5 | @ Boston Red Sox | Win 4 - 2 | |
| Sat, Sep 6, 1980 Sat, Sep 6 | @ Boston Red Sox | Loss 1 - 5 | |
| Sun, Sep 7, 1980 Sun, Sep 7 | @ Boston Red Sox | Win 12 - 6 | |
| Mon, Sep 8, 1980 Mon, Sep 8 | @ Chicago White Sox | Loss 2 - 3 | (12) |
| Tue, Sep 9, 1980 Tue, Sep 9 | @ Chicago White Sox | Win 4 - 1 | |
| Wed, Sep 10, 1980 Wed, Sep 10 | @ Chicago White Sox | Loss 3 - 4 | |
| Fri, Sep 12, 1980 Fri, Sep 12 | vs Milwaukee Brewers | Loss 1 - 7 | |
| Sat, Sep 13, 1980 Sat, Sep 13 | vs Milwaukee Brewers | Loss 0 - 8 | |
| Sun, Sep 14, 1980 Sun, Sep 14 | vs Milwaukee Brewers | Loss 2 - 3 | |
| Mon, Sep 15, 1980 Mon, Sep 15 | vs Chicago White Sox | Win 12 - 1 | |
| Tue, Sep 16, 1980 Tue, Sep 16 | vs Chicago White Sox | Loss 1 - 2 | |
| Wed, Sep 17, 1980 Wed, Sep 17 | vs Chicago White Sox | Win 4 - 0 | |
| Thu, Sep 18, 1980 Thu, Sep 18 | vs Chicago White Sox | Loss 4 - 5 | |
| Fri, Sep 19, 1980 Fri, Sep 19 | @ Milwaukee Brewers | Loss 0 - 4 | |
| Sat, Sep 20, 1980 Sat, Sep 20 | @ Milwaukee Brewers | Loss 4 - 8 | |
| Sun, Sep 21, 1980 Sun, Sep 21 | @ Milwaukee Brewers | Win 7 - 5 | |
| Mon, Sep 22, 1980 Mon, Sep 22 | vs Kansas City Royals | Win 5 - 4 | (11) |
| Tue, Sep 23, 1980 Tue, Sep 23 | vs Kansas City Royals | Win 7 - 3 | |
| Wed, Sep 24, 1980 Wed, Sep 24 | vs Kansas City Royals | Win 4 - 2 | |
| Thu, Sep 25, 1980 Thu, Sep 25 | vs Texas Rangers | Win 7 - 6 | (11) |
| Fri, Sep 26, 1980 Fri, Sep 26 | vs Texas Rangers | Win 7 - 2 | |
| Sat, Sep 27, 1980 Sat, Sep 27 | vs Texas Rangers | Loss 3 - 7 | |
| Sun, Sep 28, 1980 Sun, Sep 28 | vs Texas Rangers | Loss 1 - 4 | |
| Tue, Sep 30, 1980 Tue, Sep 30 | @ Kansas City Royals | Loss 5 - 7 | (14) |
| Wed, Oct 1, 1980 Wed, Oct 1 | @ Kansas City Royals | Loss 1 - 4 | |
| Thu, Oct 2, 1980 Thu, Oct 2 | @ Kansas City Royals | Loss 2 - 6 | |
| Fri, Oct 3, 1980 Fri, Oct 3 | @ Texas Rangers | Loss 2 - 6 | |
| Sat, Oct 4, 1980 Sat, Oct 4 | @ Texas Rangers | Loss 6 - 11 | |
| Sun, Oct 5, 1980 Sun, Oct 5 | @ Texas Rangers | Loss 2 - 3 | |
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