The Eastern League season began on approximately April 1 and the regular season ended on approximately September 1.
The Albany/Colonie Yankees defeated the Harrisburg Senators three games to one to win the Eastern League Championship Series.
Regular season
Standings Eastern League Team Win Loss % GB Albany/Colonie Yankees 92 48 .657 – Canton–Akron Indians 70 69 .504 21.5 Reading Phillies 68 71 .489 23.5 Harrisburg Senators 67 72 .482 24.5 Hagerstown Suns 67 72 .482 24.5 London Tigers 63 76 .453 28.5 Williamsport Bills 63 77 .450 29.0 New Britain Red Sox 60 76 .441 30.0
Notes: Green shade indicates that team advanced to the playoffs Bold indicates that team advanced to ELCS Italics indicates that team won ELCS
Playoffs
Semi-finals Series Albany/Colonie Yankees defeated Reading Phillies 3 games to 1. Harrisburg Senators defeated Canton–Akron Indians 3 games to 2.
Championship Series Albany/Colonie Yankees defeated Harrisburg Senators 3 games to 1.
References
External links 1989 Eastern League Review at thebaseballcube.com