| Year | Team Name | League | Division | Affilate | W | L | Pct | Rank | Managers | Stadium | Playoffs | |
| 1998 | Lethbridge | Black Diamonds | Pio | North | ARI | 43 | 32 | .573 | 2 | Joe Almaraz | Henderson Stadium | Lost in Finals |
| 1997 | Lethbridge | Black Diamonds | Pio | - | ARI | 39 | 33 | .542 | 4 | Rod Allen | Henderson Stadium | Lost in Semi-Finals |
| 1996 | Lethbridge | Black Diamonds | Pio | North | ARI | 50 | 22 | .694 | 1 | Chris Speier | Henderson Stadium | Lost in Semi-Finals |
| 1995 | Lethbridge | Mounties | Pio | North | - | 25 | 47 | .347 | 4 | Dan Simonds | Henderson Stadium | dnq |
| 1994 | Lethbridge | Mounties | Pio | North | - | 29 | 43 | .403 | 4 | Phillip Wellman | Henderson Stadium | dnq |
| 1993 | Lethbridge | Mounties | Pio | Northern | - | 29 | 44 | .397 | 4 | Phillip Wellman | Henderson Stadium | dnq |
| 1992 | Lethbridge | Mounties | Pio | Northern | - | 24 | 50 | .324 | 3 | Larry Milbourne | Henderson Stadium | dnq |
| 1983 | Lethbridge | Dodgers | Pio | Northern | LAD | 39 | 31 | .557 | 2 | Gail Henley | Henderson Stadium | dnq |
| 1982 | Lethbridge | Dodgers | Pio | Northern | LAD | 25 | 45 | .357 | 4 | Gary LaRocque | Henderson Stadium | dnq |
| 1981 | Lethbridge | Dodgers | Pio | Northern | LAD | 43 | 27 | .614 | 2 | Gary LaRocque | Henderson Stadium | dnq |
| 1980 | Lethbridge | Dodgers | Pio | Northern | LAD | 52 | 18 | .743 | 1 | Gail Henley | Henderson Stadium | League Champions |
| 1979 | Lethbridge | Dodgers | Pio | Northern | LAD | 38 | 30 | .559 | 1 | Gail Henley | Henderson Stadium | League Champions |
| 1978 | Lethbridge | Dodgers | Pio | - | LAD | 33 | 35 | .485 | 5 | Jim Lefebvre | Henderson Stadium | dnq |
| 1977 | Lethbridge | Dodgers | Pio | - | LAD | 44 | 26 | .629 | 1 | Gail Henley | dnq | |