| Date | Transaction |
| 02-28-1992 | Mark Jimerson has retired from football. |
| 09-04-1989 | The Winnipeg Tomahawks have moved Mike Smith, Doug Ferguson, and Dick Jenkins to the active roster. The Winnipeg Tomahawks have moved Erik Sauer, Bob Orth, and Johnnie Nagler to the inactive roster. |
| 09-04-1989 | The Winnipeg Tomahawks have waived Mark Jimerson. |
| 08-14-1989 | The Winnipeg Tomahawks have moved John "Fast" Chase to the active roster. The Winnipeg Tomahawks have moved Mark Jimerson to the inactive roster. |
| 10-10-1988 | The Winnipeg Tomahawks have moved Mark Jimerson to the active roster. The Winnipeg Tomahawks have moved Bill Williams to the inactive roster. |
| 08-08-1988 | The Winnipeg Tomahawks have moved Bill Williams to the active roster. The Winnipeg Tomahawks have moved Mark Jimerson to the inactive roster. |
| 11-02-1987 | The Winnipeg Tomahawks have moved Mark Jimerson to the active roster. |
| 10-26-1987 | The Winnipeg Tomahawks have moved Jeff Falkenstein to the active roster. The Winnipeg Tomahawks have moved Mark Jimerson to the inactive roster. |
| 10-25-1987 | Mark Jimerson of the Winnipeg Tomahawks is injured with a patella tendon injury and is expected to be out for approximately 12 days. |
| 05-01-1983 | The Winnipeg Tomahawks have moved Mark Jimerson and Bert Baker to the active roster. The Winnipeg Tomahawks have moved Anton Hall, Joe Maniecki, and Minion "Excited" Eliott to the inactive roster. |
| 12-27-1982 | The Winnipeg Starriors have moved Laval Ball, Larry Harrison, and Bob Whitley to the active roster. The Winnipeg Starriors have moved Mark Jimerson, Johnny Whitman, and Jim Burrough to the inactive roster. |
| 12-26-1982 | Mark Jimerson of the Winnipeg Starriors is injured with a partial ACL tear and is expected to be out for approximately 29 days. |
| 12-22-1980 | The Winnipeg Starriors have moved Mark Jimerson and David "Mantis" Mandley to the active roster. The Winnipeg Starriors have moved Dennis Walker to the inactive roster. |
| 11-30-1980 | The Winnipeg Starriors have moved Mike McCarthy to the active roster. The Winnipeg Starriors have moved Mark Jimerson and David "Mantis" Mandley to the inactive roster. |
| 11-30-1980 | Mark Jimerson of the Winnipeg Starriors is injured with a patella tendon injury and is expected to be out for approximately 20 days. |
| 11-10-1980 | The Winnipeg Starriors have moved Mark Jimerson to the active roster. The Winnipeg Starriors have moved Mike McCarthy to the inactive roster. |
| 10-20-1980 | The Winnipeg Starriors have moved Mike McCarthy to the active roster. The Winnipeg Starriors have moved Mark Jimerson to the inactive roster. |
| 10-19-1980 | Mark Jimerson of the Winnipeg Starriors is injured with a neck nerve injury and is expected to be out for approximately 25 days. |
| 11-25-1979 | Mark Jimerson of the Winnipeg Starriors is injured with a hip contusion and is expected to be out for approximately 6 days. |
| 11-26-1978 | The Winnipeg Starriors have moved Mark Jimerson and Mike Ploog to the active roster. |
| 10-30-1978 | The Winnipeg Starriors have moved A.C. Montgomery, Frank Gauer, and Randy Buck to the active roster. The Winnipeg Starriors have moved Phil Stringer, Mark Jimerson, and John Engram to the inactive roster. |
| 08-07-1978 | The Winnipeg Starriors have moved Cliff Way, Mark Jimerson, Jubilee Rogers, Scott Dozier, Darnell Hagood, and Dan Swain to the active roster. The Winnipeg Starriors have moved Cory Parsons, Marty Pryce, Mister Hand, Dave Reynolds, Dennis Field, and Les White to the inactive roster. |
Defensive End