1989 Seattle Mariners season
|1989 Seattle Mariners
Ken Griffey Jr's Rookie Season
|Major league affiliations|
|Local television||KSTW-TV 11|
|Local radio||KIRO 710 AM
(Dave Niehaus, Rick Rizzs, Joe Simpson)
|Previous season Next season|
The Seattle Mariners 1989 season was their 13th since the franchise creation, and ended the season finishing 6th in the American League West, finishing with a record of 73-89. The season, however, was enlivened by the arrival of the Mariners' 1987 first-round draft pick, Ken Griffey, Jr.
- November 15, 1988: Luis DeLeón was signed as a free agent by the Mariners.
- In spring training, Ken Griffey, Jr. set preseason team records for hits (32), RBI's (20) and total bases (49).
 Regular season
- Ken Griffey, Jr. made his major league baseball debut on April 3, 1989, in a game against the Oakland Athletics. Griffey would hit a double in his first at-bat. During the 1989 season, Griffey Jr. was honoured by being selected as card Number 1 in the 1989 Upper Deck baseball card set.
 Season standings
|Kansas City Royals||92||70||.568||7|
|Chicago White Sox||69||92||.429||29½|
 Notable transactions
- March 27, 1989: Steve Balboni was traded by the Mariners to the New York Yankees for Dana Ridenour (minors).
- May 25, 1989: Mark Langston and a player to be named later were traded by the Mariners to the Montreal Expos for Randy Johnson, Brian Holman, and Gene Harris. The Mariners completed the deal by sending Mike Campbell to the Expos on July 31.
- June 5, 1989: Brian Turang was drafted by the Mariners in the 51st round of the 1989 amateur draft.
- June 12, 1989: Steve Trout was released by the Mariners.
 Major league debuts
- Ken Griffey, Jr. (Apr 3)
- Omar Vizquel (Apr 3)
- Gene Harris (Apr 5)
- Clint Zavaras (June 3) 
|1989 Seattle Mariners|
 Player stats
|= Indicates team leader|
 Starters by position
Note: G = Games played; AB = At Bats; H = Hits; Avg. = Batting Average; HR = Home Runs; RBI = Runs Batted In
|CF||Ken Griffey, Jr.||127||455||61||120||16||61||.264||16|
 Other batters
 Starting pitchers
 Other pitchers
 Relief pitchers
 Farm system
- Luis DeLeón page at Baseball Reference
- Mint Condition: How Baseball Cards Became an American Obsession, p.167, Dave Jamieson, 2010, Atlantic Monthly Press, imprint of Grove/Atlantic Inc., New York, NY, ISBN 978-0-8021-1939-1
- Steve Balboni page at Baseball Reference
- Mark Langston page at Baseball Reference
- Brian Turankg page at Baseball Reference
- Steve Trout page at Baseball Reference
- Johnson, Lloyd, and Wolff, Miles, ed., The Encyclopedia of Minor League Baseball, 2nd and 3rd editions. Durham, N.C.: Baseball America, 1997 and 2007
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