| 78-84 | Missed Playoffs |
| Record | Outcome |
The Seattle Mariners finished the regular season with a 78-84 record. They went 40-41 at home and 38-43 on the road.
The 1987 Seattle Mariners played in the West Division of the American League.
During the regular season, the 1987 Seattle Mariners went 38-40 against their AL West opponents.
| Opponent | Record | Win Percentage % | Run Differential |
|---|---|---|---|
| Texas Rangers | 9-4 | 69.2% | +17 |
| Oakland Athletics | 8-5 | 61.5% | -1 |
| Chicago White Sox | 7-6 | 53.8% | +6 |
| California Angels | 6-7 | 46.2% | +8 |
| Kansas City Royals | 4-9 | 30.8% | -27 |
| Minnesota Twins | 4-9 | 30.8% | -31 |
No, the Mariners didn't make the Postseason in 1987.
The Seattle Mariners finished the regular season with a run differential of -41. Based on their run differential and their pythagorean expectation, the Mariners could have been expected to have about 77.1 wins, or a 77-85 record in the regular season.
In one-run games, or games that went into extra innings, the 1987 Seattle Mariners went 20-16.
During the regular season, the 1987 Seattle Mariners went 4-5 in extra inning games.
The longest win streak during the regular season for the 1987 Seattle Mariners was a 5 game winning streak.
The longest losing streak that the Seattle Mariners had during the 1987 regular season was 6 games, which happened once during the season.
= Playoff Team
Bold = Division Opponent
| Date | Opponent | Score | |
|---|---|---|---|
| Regular Season | |||
| Tue, Apr 7, 1987 Tue, Apr 7 | @ California Angels | Loss 1 - 7 | |
| Wed, Apr 8, 1987 Wed, Apr 8 | @ California Angels | Loss 1 - 7 | |
| Thu, Apr 9, 1987 Thu, Apr 9 | @ California Angels | Win 7 - 2 | |
| Fri, Apr 10, 1987 Fri, Apr 10 | vs Minnesota Twins | Loss 1 - 8 | |
| Sat, Apr 11, 1987 Sat, Apr 11 | vs Minnesota Twins | Win 6 - 5 | |
| Sun, Apr 12, 1987 Sun, Apr 12 | vs Minnesota Twins | Loss 5 - 8 | |
| Mon, Apr 13, 1987 Mon, Apr 13 | vs California Angels | Loss 3 - 5 | (10) |
| Tue, Apr 14, 1987 Tue, Apr 14 | vs California Angels | Win 6 - 4 | |
| Wed, Apr 15, 1987 Wed, Apr 15 | vs California Angels | Loss 0 - 4 | |
| Thu, Apr 16, 1987 Thu, Apr 16 | vs Oakland Athletics | Win 6 - 5 | |
| Fri, Apr 17, 1987 Fri, Apr 17 | vs Oakland Athletics | Win 4 - 2 | |
| Sat, Apr 18, 1987 Sat, Apr 18 | vs Oakland Athletics | Loss 5 - 7 | |
| Sun, Apr 19, 1987 Sun, Apr 19 | vs Oakland Athletics | Win 8 - 1 | |
| Mon, Apr 20, 1987 Mon, Apr 20 | @ Minnesota Twins | Loss 5 - 13 | |
| Tue, Apr 21, 1987 Tue, Apr 21 | @ Minnesota Twins | Loss 1 - 6 | |
| Wed, Apr 22, 1987 Wed, Apr 22 | @ Minnesota Twins | Win 4 - 3 | |
| Fri, Apr 24, 1987 Fri, Apr 24 | @ Oakland Athletics | Win 6 - 3 | |
| Sat, Apr 25, 1987 Sat, Apr 25 | @ Oakland Athletics | Loss 3 - 7 | |
| Sun, Apr 26, 1987 Sun, Apr 26 | @ Oakland Athletics | Win 8 - 5 | |
| Mon, Apr 27, 1987 Mon, Apr 27 | vs Detroit Tigers | Win 5 - 2 | |
| Tue, Apr 28, 1987 Tue, Apr 28 | vs Detroit Tigers | Win 6 - 4 | |
| Wed, Apr 29, 1987 Wed, Apr 29 | vs Boston Red Sox | Loss 5 - 11 | |
| Thu, Apr 30, 1987 Thu, Apr 30 | vs Boston Red Sox | Win 11 - 2 | |
| Fri, May 1, 1987 Fri, May 1 | vs Milwaukee Brewers | Loss 8 - 10 | |
| Sat, May 2, 1987 Sat, May 2 | vs Milwaukee Brewers | Loss 4 - 6 | |
| Sun, May 3, 1987 Sun, May 3 | vs Milwaukee Brewers | Win 7 - 3 | |
| Tue, May 5, 1987 Tue, May 5 | @ Detroit Tigers | Win 7 - 5 | |
| Wed, May 6, 1987 Wed, May 6 | @ Detroit Tigers | Loss 5 - 7 | |
| Fri, May 8, 1987 Fri, May 8 | @ Milwaukee Brewers | Win 4 - 3 | (12) |
| Sat, May 9, 1987 Sat, May 9 | @ Milwaukee Brewers | Win 8 - 2 | |
| Sun, May 10, 1987 Sun, May 10 | @ Milwaukee Brewers | Win 5 - 1 | |
| Mon, May 11, 1987 Mon, May 11 | @ Boston Red Sox | Win 4 - 3 | |
| Tue, May 12, 1987 Tue, May 12 | @ Boston Red Sox | Loss 2 - 3 | |
| Wed, May 13, 1987 Wed, May 13 | @ Boston Red Sox | Win 5 - 4 | |
| Fri, May 15, 1987 Fri, May 15 | vs New York Yankees | Loss 3 - 7 | |
| Sat, May 16, 1987 Sat, May 16 | vs New York Yankees | Win 10 - 8 | |
| Sun, May 17, 1987 Sun, May 17 | vs New York Yankees | Loss 3 - 8 | |
| Mon, May 18, 1987 Mon, May 18 | vs Baltimore Orioles | Loss 0 - 6 | |
| Tue, May 19, 1987 Tue, May 19 | vs Baltimore Orioles | Loss 4 - 15 | |
| Wed, May 20, 1987 Wed, May 20 | vs Baltimore Orioles | Win 6 - 2 | |
| Fri, May 22, 1987 Fri, May 22 | vs Toronto Blue Jays | Loss 5 - 7 | |
| Sat, May 23, 1987 Sat, May 23 | vs Toronto Blue Jays | Loss 2 - 6 | |
| Sun, May 24, 1987 Sun, May 24 | vs Toronto Blue Jays | Win 5 - 2 | |
| Mon, May 25, 1987 Mon, May 25 | vs Toronto Blue Jays | Loss 5 - 6 | |
| Wed, May 27, 1987 Wed, May 27 | @ New York Yankees | Win 6 - 5 | |
| Thu, May 28, 1987 Thu, May 28 | @ New York Yankees | Loss 2 - 5 | |
| Fri, May 29, 1987 Fri, May 29 | @ Baltimore Orioles | Win 7 - 3 | |
| Sat, May 30, 1987 Sat, May 30 | @ Baltimore Orioles | Win 12 - 0 | |
| Sun, May 31, 1987 Sun, May 31 | @ Baltimore Orioles | Win 8 - 5 | |
| Mon, Jun 1, 1987 Mon, Jun 1 | @ Toronto Blue Jays | Win 2 - 0 | |
| Tue, Jun 2, 1987 Tue, Jun 2 | @ Toronto Blue Jays | Loss 3 - 4 | |
| Wed, Jun 3, 1987 Wed, Jun 3 | @ Toronto Blue Jays | Loss 2 - 7 | |
| Thu, Jun 4, 1987 Thu, Jun 4 | vs Kansas City Royals | Loss 1 - 6 | |
| Fri, Jun 5, 1987 Fri, Jun 5 | vs Kansas City Royals | Win 7 - 2 | |
| Sat, Jun 6, 1987 Sat, Jun 6 | vs Kansas City Royals | Loss 2 - 5 | |
| Sun, Jun 7, 1987 Sun, Jun 7 | vs Kansas City Royals | Loss 1 - 9 | |
| Mon, Jun 8, 1987 Mon, Jun 8 | vs Texas Rangers | Win 6 - 0 | |
| Tue, Jun 9, 1987 Tue, Jun 9 | vs Texas Rangers | Loss 0 - 3 | |
| Wed, Jun 10, 1987 Wed, Jun 10 | vs Texas Rangers | Loss 5 - 9 | |
| Fri, Jun 12, 1987 Fri, Jun 12 | vs Cleveland Indians | Loss 6 - 10 | |
| Sat, Jun 13, 1987 Sat, Jun 13 | vs Cleveland Indians | Loss 1 - 6 | |
| Sun, Jun 14, 1987 Sun, Jun 14 | vs Cleveland Indians | Win 4 - 3 | (10) |
| Mon, Jun 15, 1987 Mon, Jun 15 | vs Chicago White Sox | Win 8 - 2 | |
| Tue, Jun 16, 1987 Tue, Jun 16 | vs Chicago White Sox | Win 8 - 6 | |
| Wed, Jun 17, 1987 Wed, Jun 17 | vs Chicago White Sox | Win 2 - 0 | |
| Fri, Jun 19, 1987 Fri, Jun 19 | @ Cleveland Indians | Win 7 - 4 | |
| Sat, Jun 20, 1987 Sat, Jun 20 | @ Cleveland Indians | Loss 2 - 9 | |
| Sun, Jun 21, 1987 Sun, Jun 21 | @ Cleveland Indians | Win 5 - 0 | |
| Mon, Jun 22, 1987 Mon, Jun 22 | @ Chicago White Sox | Win 3 - 0 | |
| Tue, Jun 23, 1987 Tue, Jun 23 | @ Chicago White Sox | Loss 3 - 13 | |
| Wed, Jun 24, 1987 Wed, Jun 24 | @ Chicago White Sox | Win 10 - 7 | |
| Fri, Jun 26, 1987 Fri, Jun 26 | @ Kansas City Royals | Win 5 - 1 | |
| Sat, Jun 27, 1987 Sat, Jun 27 | @ Kansas City Royals | Loss 0 - 6 | |
| Sun, Jun 28, 1987 Sun, Jun 28 | @ Kansas City Royals | Loss 3 - 8 | |
| Mon, Jun 29, 1987 Mon, Jun 29 | @ Texas Rangers | Loss 3 - 4 | |
| Tue, Jun 30, 1987 Tue, Jun 30 | @ Texas Rangers | Win 5 - 2 | |
| Wed, Jul 1, 1987 Wed, Jul 1 | @ Texas Rangers | Loss 3 - 7 | |
| Thu, Jul 2, 1987 Thu, Jul 2 | vs Detroit Tigers | Win 5 - 2 | |
| Fri, Jul 3, 1987 Fri, Jul 3 | vs Detroit Tigers | Loss 2 - 5 | |
| Sat, Jul 4, 1987 Sat, Jul 4 | vs Detroit Tigers | Loss 3 - 7 | |
| Sun, Jul 5, 1987 Sun, Jul 5 | vs Detroit Tigers | Loss 5 - 7 | |
| Mon, Jul 6, 1987 Mon, Jul 6 | vs Milwaukee Brewers | Win 3 - 2 | |
| Tue, Jul 7, 1987 Tue, Jul 7 | vs Milwaukee Brewers | Win 9 - 5 | |
| Wed, Jul 8, 1987 Wed, Jul 8 | vs Milwaukee Brewers | Win 5 - 2 | (11) |
| Thu, Jul 9, 1987 Thu, Jul 9 | vs Boston Red Sox | Win 11 - 5 | |
| Fri, Jul 10, 1987 Fri, Jul 10 | vs Boston Red Sox | Loss 4 - 7 | |
| Sat, Jul 11, 1987 Sat, Jul 11 | vs Boston Red Sox | Loss 4 - 10 | |
| Sun, Jul 12, 1987 Sun, Jul 12 | vs Boston Red Sox | Win 6 - 1 | |
| Thu, Jul 16, 1987 Thu, Jul 16 | @ Detroit Tigers | Loss 2 - 3 | |
| Fri, Jul 17, 1987 Fri, Jul 17 | @ Detroit Tigers | Loss 0 - 7 | |
| Sat, Jul 18, 1987 Sat, Jul 18 | @ Detroit Tigers | Loss 6 - 10 | |
| Sun, Jul 19, 1987 Sun, Jul 19 | @ Detroit Tigers | Win 5 - 4 | |
| Mon, Jul 20, 1987 Mon, Jul 20 | @ Milwaukee Brewers | Loss 11 - 13 | |
| Tue, Jul 21, 1987 Tue, Jul 21 | @ Milwaukee Brewers | Loss 4 - 6 | |
| Wed, Jul 22, 1987 Wed, Jul 22 | @ Milwaukee Brewers | Win 2 - 1 | |
| Fri, Jul 24, 1987 Fri, Jul 24 | @ Boston Red Sox | Loss 4 - 5 | |
| Sat, Jul 25, 1987 Sat, Jul 25 | @ Boston Red Sox | Loss 5 - 11 | |
| Sun, Jul 26, 1987 Sun, Jul 26 | @ Boston Red Sox | Loss 1 - 11 | |
| Mon, Jul 27, 1987 Mon, Jul 27 | vs Minnesota Twins | Loss 3 - 4 | |
| Tue, Jul 28, 1987 Tue, Jul 28 | vs Minnesota Twins | Win 6 - 1 | |
| Wed, Jul 29, 1987 Wed, Jul 29 | vs Minnesota Twins | Win 8 - 3 | |
| Fri, Jul 31, 1987 Fri, Jul 31 | @ California Angels | Loss 2 - 8 | |
| Sat, Aug 1, 1987 Sat, Aug 1 | @ California Angels | Loss 3 - 4 | |
| Sun, Aug 2, 1987 Sun, Aug 2 | @ California Angels | Win 5 - 4 | |
| Mon, Aug 3, 1987 Mon, Aug 3 | @ Oakland Athletics | Win 4 - 3 | |
| Tue, Aug 4, 1987 Tue, Aug 4 | @ Oakland Athletics | Loss 3 - 9 | |
| Wed, Aug 5, 1987 Wed, Aug 5 | @ Oakland Athletics | Loss 1 - 3 | |
| Thu, Aug 6, 1987 Thu, Aug 6 | vs California Angels | Win 15 - 4 | |
| Fri, Aug 7, 1987 Fri, Aug 7 | vs California Angels | Win 14 - 0 | |
| Sat, Aug 8, 1987 Sat, Aug 8 | vs California Angels | Win 5 - 3 | |
| Sun, Aug 9, 1987 Sun, Aug 9 | vs California Angels | Loss 5 - 7 | |
| Mon, Aug 10, 1987 Mon, Aug 10 | vs Oakland Athletics | Loss 4 - 15 | |
| Tue, Aug 11, 1987 Tue, Aug 11 | vs Oakland Athletics | Win 8 - 2 | |
| Wed, Aug 12, 1987 Wed, Aug 12 | vs Oakland Athletics | Win 4 - 3 | |
| Fri, Aug 14, 1987 Fri, Aug 14 | @ Minnesota Twins | Loss 3 - 6 | |
| Sat, Aug 15, 1987 Sat, Aug 15 | @ Minnesota Twins | Loss 4 - 14 | |
| Sun, Aug 16, 1987 Sun, Aug 16 | @ Minnesota Twins | Loss 1 - 5 | |
| Mon, Aug 17, 1987 Mon, Aug 17 | @ Minnesota Twins | Loss 2 - 4 | |
| Tue, Aug 18, 1987 Tue, Aug 18 | vs New York Yankees | Loss 3 - 4 | |
| Wed, Aug 19, 1987 Wed, Aug 19 | vs New York Yankees | Loss 0 - 8 | |
| Thu, Aug 20, 1987 Thu, Aug 20 | vs New York Yankees | Win 4 - 3 | (12) |
| Fri, Aug 21, 1987 Fri, Aug 21 | vs Baltimore Orioles | Win 3 - 2 | |
| Sat, Aug 22, 1987 Sat, Aug 22 | vs Baltimore Orioles | Win 14 - 6 | |
| Sun, Aug 23, 1987 Sun, Aug 23 | vs Baltimore Orioles | Loss 5 - 6 | |
| Mon, Aug 24, 1987 Mon, Aug 24 | vs Toronto Blue Jays | Loss 3 - 7 | |
| Tue, Aug 25, 1987 Tue, Aug 25 | vs Toronto Blue Jays | Loss 3 - 6 | |
| Fri, Aug 28, 1987 Fri, Aug 28 | @ New York Yankees | Win 10 - 4 | |
| Sat, Aug 29, 1987 Sat, Aug 29 | @ New York Yankees | Win 7 - 1 | |
| Sat, Aug 29, 1987 Sat, Aug 29 | @ New York Yankees | Loss 2 - 4 | |
| Sun, Aug 30, 1987 Sun, Aug 30 | @ New York Yankees | Loss 1 - 4 | |
| Mon, Aug 31, 1987 Mon, Aug 31 | @ Baltimore Orioles | Loss 3 - 4 | |
| Tue, Sep 1, 1987 Tue, Sep 1 | @ Baltimore Orioles | Win 5 - 0 | |
| Wed, Sep 2, 1987 Wed, Sep 2 | @ Baltimore Orioles | Win 8 - 6 | |
| Fri, Sep 4, 1987 Fri, Sep 4 | @ Toronto Blue Jays | Loss 5 - 6 | (10) |
| Sat, Sep 5, 1987 Sat, Sep 5 | @ Toronto Blue Jays | Loss 0 - 3 | |
| Sun, Sep 6, 1987 Sun, Sep 6 | @ Toronto Blue Jays | Loss 2 - 3 | (11) |
| Mon, Sep 7, 1987 Mon, Sep 7 | @ Cleveland Indians | Win 6 - 4 | |
| Tue, Sep 8, 1987 Tue, Sep 8 | @ Cleveland Indians | Win 7 - 0 | |
| Wed, Sep 9, 1987 Wed, Sep 9 | @ Cleveland Indians | Win 9 - 4 | |
| Fri, Sep 11, 1987 Fri, Sep 11 | vs Chicago White Sox | Loss 1 - 5 | |
| Sat, Sep 12, 1987 Sat, Sep 12 | vs Chicago White Sox | Win 12 - 2 | |
| Sun, Sep 13, 1987 Sun, Sep 13 | vs Chicago White Sox | Loss 0 - 2 | |
| Mon, Sep 14, 1987 Mon, Sep 14 | vs Cleveland Indians | Loss 8 - 11 | |
| Tue, Sep 15, 1987 Tue, Sep 15 | vs Cleveland Indians | Loss 2 - 4 | |
| Wed, Sep 16, 1987 Wed, Sep 16 | vs Cleveland Indians | Win 5 - 3 | |
| Thu, Sep 17, 1987 Thu, Sep 17 | @ Chicago White Sox | Loss 8 - 9 | (10) |
| Fri, Sep 18, 1987 Fri, Sep 18 | @ Chicago White Sox | Win 1 - 0 | |
| Sat, Sep 19, 1987 Sat, Sep 19 | @ Chicago White Sox | Loss 8 - 10 | |
| Sun, Sep 20, 1987 Sun, Sep 20 | @ Chicago White Sox | Loss 3 - 5 | |
| Mon, Sep 21, 1987 Mon, Sep 21 | vs Kansas City Royals | Win 5 - 1 | |
| Tue, Sep 22, 1987 Tue, Sep 22 | vs Kansas City Royals | Loss 3 - 4 | (10) |
| Wed, Sep 23, 1987 Wed, Sep 23 | vs Kansas City Royals | Loss 0 - 9 | |
| Fri, Sep 25, 1987 Fri, Sep 25 | vs Texas Rangers | Win 12 - 3 | |
| Sat, Sep 26, 1987 Sat, Sep 26 | vs Texas Rangers | Win 2 - 1 | |
| Sun, Sep 27, 1987 Sun, Sep 27 | vs Texas Rangers | Win 5 - 3 | |
| Mon, Sep 28, 1987 Mon, Sep 28 | @ Kansas City Royals | Win 5 - 1 | |
| Tue, Sep 29, 1987 Tue, Sep 29 | @ Kansas City Royals | Loss 3 - 6 | |
| Wed, Sep 30, 1987 Wed, Sep 30 | @ Kansas City Royals | Loss 3 - 7 | |
| Thu, Oct 1, 1987 Thu, Oct 1 | @ Texas Rangers | Win 8 - 6 | |
| Fri, Oct 2, 1987 Fri, Oct 2 | @ Texas Rangers | Win 5 - 4 | |
| Sat, Oct 3, 1987 Sat, Oct 3 | @ Texas Rangers | Win 6 - 4 | |
| Sun, Oct 4, 1987 Sun, Oct 4 | @ Texas Rangers | Win 7 - 4 | |
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