| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rick Reuschel | SFN | 7.72 | 198906160_CIN_SFN |
| Orel Hershiser | LAN | 7.56 | 198906140_HOU_LAN |
| Roger Clemens | BOS | 6.36 | 198906160_BOS_CHA |
| Dwight Gooden | NYN | 4.91 | 198906140_CHN_NYN |
| Dennis Martinez | WAS | 4.48 | 198906150_WAS_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -4.1 | 198906161_TEX_NYA |
| Jerry Reuss | CHA | -3.33 | 198906140_CLE_CHA |
| Bill Swift | SEA | -2.49 | 198906140_SEA_MIN |
| Andy Hawkins | NYA | -2.22 | 198906161_TEX_NYA |
| Bob Knepper | HOU | -1.54 | 198906140_HOU_LAN |
Based on accumulated WAA for this season up to 1989-06-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 3.75 | Rick Reuschel | 111.7 | SFN |
| +005+ | 3.59 | Mike Morgan | 79.3 | LAN |
| +006+ | 3.48 | Mike Moore | 101 | OAK |
| +007+ | 3.45 | Mark Gubicza | 122.3 | KCA |
| +009+ | 3.28 | John Smoltz | 105.3 | ATL |
| +011+ | 3.23 | Ed Whitson | 104.3 | SDN |
| +013+ | 3.11 | Chuck Finley | 92 | ANA |
| +017+ | 2.87 | Bryn Smith | 92.3 | WAS |
| +018+ | 2.84 | Orel Hershiser | 106 | LAN |
| +021+ | 2.72 | Greg Swindell | 103.3 | CLE |
| +022+ | 2.71 | Dwight Gooden | 99 | NYN |
| +023+ | 2.7 | Kirk McCaskill | 89.7 | ANA |
| +025+ | 2.67 | Scott Garrelts | 96.3 | SFN |
| +026+ | 2.66 | Bert Blyleven | 94 | ANA |
| +028+ | 2.62 | Mike Scott | 105.3 | HOU |
| +032+ | 2.51 | Mike Bielecki | 73.3 | CHN |
| +035+ | 2.4 | Dennis Martinez | 104 | WAS |
| +042+ | 2.28 | Doug Drabek | 94.7 | PIT |
| +044+ | 2.24 | Roger Clemens | 111.3 | BOS |
| +046+ | 2.23 | Jeff Ballard | 83 | BAL |
| +047+ | 2.2 | Chris Bosio | 97.7 | MIL |
| +048+ | 2.19 | Todd Burns | 49.7 | OAK |
| +055+ | 2.04 | Jose DeLeon | 107.3 | SLN |
| +056+ | 2 | Bret Saberhagen | 100.3 | KCA |
| +057+ | 1.98 | Bob Welch | 93.3 | OAK |
_