| Tm | Name | W | L | Start | End | |
|---|---|---|---|---|---|---|
| ANA | Terry Collins | 34 | 26 | Beg | 19980607 | |
| ANA | Joe Maddon | 6 | 2 | 19980609 | 19980616 | |
| ANA | Terry Collins | 45 | 49 | 19980617 | End | |
| ARI | Buck Showalter | 65 | 97 | Beg | End | |
| ATL | Bobby Cox | 106 | 56 | Beg | End | |
| BAL | Ray Miller | 79 | 83 | Beg | End | |
| BOS | Jimy Williams | 92 | 70 | Beg | End | |
| CHA | Jerry Manuel | 80 | 82 | Beg | End | |
| CHN | Jim Riggleman | 90 | 73 | Beg | End | |
| CIN | Jack McKeon | 77 | 85 | Beg | End | |
| CLE | Mike Hargrove | 89 | 73 | Beg | End | |
| COL | Don Baylor | 77 | 85 | Beg | End | |
| DET | Buddy Bell | 52 | 85 | Beg | 19980831 | |
| DET | Larry Parrish | 13 | 12 | 19980901 | End | |
| HOU | Larry Dierker | 102 | 60 | Beg | End | |
| KCA | Tony Muser | 23 | 38 | Beg | 19980608 | |
| KCA | Jamie Quirk | 4 | 4 | 19980609 | 19980617 | |
| KCA | Tony Muser | 45 | 47 | 19980618 | End | |
| LAN | Bill Russell | 36 | 38 | Beg | 19980621 | |
| LAN | Glenn Hoffman | 47 | 41 | 19980622 | End | |
| MIA | Jim Leyland | 54 | 108 | Beg | End | |
| MIL | Phil Garner | 74 | 88 | Beg | End | |
| MIN | Tom Kelly | 70 | 92 | Beg | End | |
| NYA | Joe Torre | 114 | 48 | Beg | End | |
| NYN | Bobby Valentine | 88 | 74 | Beg | End | |
| OAK | Art Howe | 74 | 88 | Beg | End | |
| PHI | Terry Francona | 75 | 87 | Beg | End | |
| PIT | Gene Lamont | 69 | 93 | Beg | End | |
| SDN | Bruce Bochy | 98 | 64 | Beg | End | |
| SEA | Lou Piniella | 76 | 85 | Beg | End | |
| SFN | Dusty Baker | 89 | 74 | Beg | End | |
| SLN | Tony LaRussa | 83 | 79 | Beg | End | |
| TBA | Larry Rothschild | 63 | 99 | Beg | End | |
| TEX | Johnny Oates | 88 | 74 | Beg | End | |
| TOR | Tim Johnson | 88 | 74 | Beg | End | |
| WAS | Felipe Alou | 65 | 97 | Beg | End |
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