| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 7.07 | 198906050_BOS_DET |
| Rick Reuschel | SFN | 6.57 | 198906062_SFN_CIN |
| Doug Drabek | PIT | 4.17 | 198906040_PIT_NYN |
| Dennis Martinez | WAS | 3.86 | 198906040_WAS_PHI |
| Jimmy Key | TOR | 2.88 | 198906050_MIL_TOR |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -4.29 | 198906050_CHA_TEX |
| Jerry Reuss | CHA | -3.98 | 198906040_MIN_CHA |
| Mike Smithson | BOS | -3.35 | 198906040_TOR_BOS |
| Andy Hawkins | NYA | -3.32 | 198906050_BAL_NYA |
| Rich Yett | CLE | -2.38 | 198906060_CLE_ANA |
Based on accumulated WAA for this season up to 1989-06-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.63 | Kirk McCaskill | 80 | ANA |
| +004+ | 3.44 | Mike Morgan | 73.3 | LAN |
| +005+ | 3.32 | Mike Moore | 87.7 | OAK |
| +007+ | 2.94 | Ed Whitson | 91.3 | SDN |
| +008+ | 2.93 | Chuck Finley | 76.7 | ANA |
| +009+ | 2.88 | Rick Reuschel | 94.7 | SFN |
| +013+ | 2.78 | Dwight Gooden | 88 | NYN |
| +016+ | 2.7 | Mark Gubicza | 104.3 | KCA |
| +018+ | 2.61 | Bert Blyleven | 80.3 | ANA |
| +020+ | 2.54 | Jeff Ballard | 72.3 | BAL |
| +022+ | 2.36 | Orel Hershiser | 91 | LAN |
| +023+ | 2.32 | Mike Scott | 90 | HOU |
| +028+ | 2.26 | Mike Bielecki | 61 | CHN |
| +029+ | 2.21 | John Smoltz | 89.3 | ATL |
| +030+ | 2.19 | Bryn Smith | 75.3 | WAS |
| +034+ | 2.1 | Doug Drabek | 78.7 | PIT |
| +036+ | 2.04 | Greg Swindell | 86.7 | CLE |
| +037+ | 2.03 | Chris Bosio | 84.3 | MIL |
| +042+ | 1.95 | Todd Burns | 42.3 | OAK |
| +043+ | 1.94 | Derek Lilliquist | 61 | ATL |
| +044+ | 1.91 | Scott Garrelts | 83 | SFN |
| +050+ | 1.75 | Doyle Alexander | 85 | DET |
| +053+ | 1.69 | Bret Saberhagen | 87.3 | KCA |
| +054+ | 1.69 | Kevin Brown | 78.7 | TEX |
| +056+ | 1.65 | Roger Clemens | 95.3 | BOS |
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