1995 Seattle Mariners season

The 1995 Seattle Mariners season was the 19th in the history of the franchise. The team finished with a regular season record of .540 to win their first American League West title, after having been down by as many as 13 games in early August. They had tied the California Angels for first place, and in the one-game tiebreaker, the Mariners defeated the Angels 9–1 to make the postseason for the first time in franchise history.

In the postseason, the Mariners defeated the New York Yankees in the best-of-five American League Division Series after losing the first two games in New York, a series notable for Edgar Martínez' walk-off 11th-inning double in the fifth game. In the League Championship Series with the favored Cleveland Indians, Seattle won the opener at home and the third game on the road, but fell in six games.

Offseason

 * October 14, 1994: Alex Diaz was selected off waivers by the Mariners from the Milwaukee Brewers.
 * November 29, 1994: Félix Fermín was signed as a free agent with the Mariners.
 * December 21, 1994: Jay Buhner was signed as a free agent with the Mariners.
 * December 21, 1994: Eric Anthony was released by the Mariners.

Regular season

 * Ken Griffey Jr. suffered a severe left wrist injury on May 26 while making a catch at the wall that sidelined him until mid-August.  The Mariners stayed afloat at around .500, and their historic late season comeback tied the California Angels.
 * The Mariners honored the West Coast Negro Baseball League Seattle Steelheads when they wore 1946 Steelheads uniforms on September 9, 1995, at home against the Kansas City Royals. The Royals wore Kansas City Monarchs uniforms. The Mariners beat the Royals 6 to 2 in front of 39,157 fans at the Kingdome.
 * Randy Johnson won the Cy Young Award. The award came at the end of a banner year. Johnson (18-2, 2.48 ERA, 294 strikeouts) narrowly missed becoming the first AL Triple Crown pitcher (leading the league in wins, ERA, and strikeouts) since Detroit's Hal Newhouser accomplished the feat in 1945. His .900 winning percentage broke Ron Guidry's 1978 record, and his strikeouts per nine innings ratio of 12.35 broke the record held by Nolan Ryan.

Opening Day lineup

 * Darren Bragg
 * Joey Cora
 * Ken Griffey Jr.
 * Jay Buhner
 * Edgar Martinez
 * Tino Martinez
 * Mike Blowers
 * Dan Wilson
 * Félix Fermín
 * Randy Johnson

Notable transactions

 * May 15: Roger Salkeld was traded by the Mariners to the Cincinnati Reds for Tim Belcher.
 * July 14: Norm Charlton was signed by the Mariners after being released by the Cincinnati Reds
 * July 31: Ron Villone and Marc Newfield were traded by the Mariners to the San Diego Padres for Andy Benes and a player to be named later. The Padres sent Greg Keagle to the Mariners on September 17.
 * August 15: The Mariners traded a player to be named later to the Kansas City Royals for Vince Coleman. The Mariners sent Jim Converse to the Royals on August 18.

Draft picks

 * June 1: 1995 Major League Baseball draft
 * Shane Monahan was drafted by the Mariners in the second round, and signed on June 27, 1995.
 * Juan Pierre was drafted by the Mariners in the thirtieth round, but did not sign.

Pennant chase
On the morning of August 21, the Mariners (.500) were 12½ games behind the Angels (.610). Two weeks later, the lead was down to 5½ games, as the Angels went 1–12 while the Mariners were 8–5. After another two weeks, the lead was down to three games, and the teams were even at .530 on the morning of September 21. Seattle led by as many as three games. On September 30 with 2 games left of season, the Mariners only needed one more win to clinch their first playoff spot in franchise history, but couldn't hold it, as they lost their final two games at Texas; the Angels won their final five games to tie the Mariners at .540, requiring a one-game playoff for the division title. Also on a five-game winning streak, the Yankees secured the new wild card berth at .540.

Season standings
''Note: Teams played 144 games instead of the normal 162 as a consequence of the 1994 strike. Seattle and California each played 145 games due to the one-game tiebreaker.''

Regular season
Bold = Mariners team member
 * - style="text-align:center;"
 * Legend:      = Win       = Loss       = Postponement

Starters by position
''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters
''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Starting pitchers
Note: GS = Games started; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts; SV = Saves

Awards and honors

 * Randy Johnson, American League Cy Young Award winner, American League leader, strikeouts
 * Edgar Martínez, American League Leader, batting average
 * Lou Piniella, Associated Press American League Manager of the Year

In popular culture
The Mariners' ALDS run is the subject of the song, My Oh My, by Seattle-based rapper, Macklemore.

Chicago-based band Coping has a song titled "'95 Mariners."

In July 2019, the MLB Network released MLB Network Presents: The 1995 Mariners, Saving Baseball in Seattle.

The team's playoff run received a dedicated segment in the SB Nation docuseries The History of the Seattle Mariners, titled "The Battle for Seattle."

Farm system

 * Source