| 1989 Trades | ||||||
| 1 | To Tempe: | Great Lakes' 1st rd pick in '90 | 1 | To Great Lakes: | Lee Guetterman & Tempe's 2nd rd pick in '89 | |
| 2 | To Portland: | John Ferrell | 2 | To Pittsburgh: | Jerry Browne | |
| 3 | To Erie: | Tempe's & Rochester's 3rd rd pick in '89 | 3 | To Tempe: | Erie's 2nd rd pick in '90 | |
| 4 | To Baltimore: | Pittsburgh's 2nd rd pick in '89 | 4 | To Pittsburgh: | George Bell | |
| 5 | To Rochester: | Scott Garrelts and San Francisco's 5th rd pick in '89 | 5 | To San Francisco: | Charlie Leibrandt and Rochester's 5th rd pick in '90 | |
| 6 | To Erie: | Gregg Olson | 6 | To Chicago: | Greg Swindell | |
| 7 | To Tempe: | Crousetown's 4th rd pick in '90 | 7 | To Crousetown: | Trevor Wilson | |
| 8 | To Great Lakes: | Alfredo Griffin | 8 | To Tempe: | Andres Thomas and Great Lakes' 5th rd pick in '90 | |
| 9 | To Erie: | Dave Parker | 9 | To Manchester: | Erie's 3rd rd pick in '90 | |
| 10 | To Baltimore: | Roger McDowell | 10 | To Fort Wayne: | Larry McWilliams and Baltimore's 4th rd pick in '90 | |
| 11 | To Fort Wayne: | Wink's 2nd rd pick in '90 | 11 | To Wink: | Todd Stottlemyre and Fort Wayne's 6th rd pick in '90 | |
| To Texas: | Dwight Evans and Fort Wayne's 8th rd pick in '90 | To Fort Wayne: | Fred Lynn and Texas' 4th rd pick in '90 | |||