| Date | Transaction |
| 02-28-1973 | John Mikula has retired from football. |
| 08-30-1971 | The Minnesota Wolves have waived John Mikula. |
| 08-30-1971 | The Minnesota Wolves have moved Dennis Powell, Vagas Seeds, Alex Scott, Vince Black, Zollie Scott, Steve Smith, Ric Stone, and Mike Williams to the active roster. The Minnesota Wolves have moved Dick Knutson, John Sims, Larry Dronett, Patrick Walter, Dick Norby, and John Mikula to the inactive roster. |
| 08-09-1971 | The Minnesota Wolves have moved John Still, Doug Williams, Mike Williams, Al Galvin, John Sims, Joaquin Thompson, Jay Bernich, Vaughn Mamula, Robb McConnell, Kenyon Muster, Larry Dronett, Dick Norby, and John Mikula to the active roster. The Minnesota Wolves have moved Dennis Powell, Aaron Williams, Alex Scott, John Middleton, Vince Black, Steve Smith, Mike Worden, Keith Martin, Artrell Kelley, Frank Yeates, Edwin Walker, Ric Stone, and Calvin Hunsinger to the inactive roster. |
| 09-06-1970 | John Mikula of the Minnesota Wolves is injured with a mild concussion and is expected to be out for approximately 3 days. |
| 09-06-1970 | The Minnesota Wolves have moved Gordon Holman, Aaron Williams, Alex Scott, Martin Stowe, Vince Black, Jim Lofton, Steve Smith, Artrell Kelley, Frank Yeates, Dave Anderson, Bud Kirner, Ric Stone, and Pete Harper to the active roster. The Minnesota Wolves have moved John Still, Doug Williams, Dick Knutson, Al Galvin, John Caranci, Sam Nix, Earl Kunz, Art Batchellor, Bill McMillin, Gerald Johnson, Dick Norby, and John Mikula to the inactive roster. |
| 08-24-1970 | The Minnesota Wolves have moved James Reutt, Pat Wilson, Patrick Walter, Dick Norby, John Mikula, Don Lund, Chuck Boyd, John Caranci, Dennis Powell, Mike Worden, and Johnny Heinlein to the active roster. The Minnesota Wolves have moved Hank Walters, Walt Skladany, Ty Merkens, Lynn Irons, Bill Wilson, Joe Zomalt, Leonardo Young, Tom Ardizzone, Ray Taylor, Steve Johnson, and Chris Sklopan to the inactive roster. |
| 08-10-1970 | The Minnesota Wolves have moved Walt Skladany, Tom Ardizzone, Joe Zomalt, Ray Taylor, Steve Johnson, Chris Sklopan, Lynn Irons, Bill Wilson, Leonardo Young, Ty Merkens, and Hank Walters to the active roster. The Minnesota Wolves have moved Don Lund, James Reutt, Johnny Heinlein, Gordon Holman, Mike Worden, Chuck Boyd, Pat Wilson, Patrick Walter, Dick Norby, Pete Harper, and John Mikula to the inactive roster. |
| 04-28-1968 | The Minnesota Wolves have moved Gordon Holman, Vance Zanders, Chuck Boyd, Antwaun Woods, Bill McMillin, Pat Wilson, Eldonta Morrison, Patrick Walter, and John Mikula to the active roster. The Minnesota Wolves have moved Kywin Howfield, Aaron Williams, Alex Scott, John Middleton, Vince Black, Steve Smith, Mickey Glasgow, Ric Stone, and Tiny Wilson to the inactive roster. |
| 04-28-1968 | The Minnesota Wolves have acquired John Mikula from the waiver wire. |
| 08-22-1966 | The Washington Xenomorphs have waived John Mikula. |
| 12-27-1965 | The Washington Xenomorphs have moved Tony Moriarty, Mark Ecklund, and Bill Bagby to the active roster. The Washington Xenomorphs have moved E.L. Ulinski, John Mikula, and Albert Ray to the inactive roster. |
| 12-20-1965 | The Washington Xenomorphs have moved Albert Ray, Pete Burgess, E.L. Ulinski, and John Mikula to the active roster. The Washington Xenomorphs have moved Larry Walton, Bill Bagby, Mark Ecklund, and Tony Moriarty to the inactive roster. |
| 12-06-1965 | The Washington Xenomorphs have moved Larry Walton, Bill Bagby, and Eddie Baker to the active roster. The Washington Xenomorphs have moved Max Ariail, Pete Burgess, and John Mikula to the inactive roster. |
| 11-29-1965 | The Washington Xenomorphs have moved Tony Moriarty, Richard Studdard, and John Mikula to the active roster. The Washington Xenomorphs have moved Paul Sanders, Larry Walton, and Bill Bagby to the inactive roster. |
| 10-25-1965 | The Washington Xenomorphs have moved Richard Studdard, Bill Mallory, Eddie Brown, Al Compton, and Bill Bagby to the active roster. The Washington Xenomorphs have moved Tony Moriarty, E.L. Ulinski, John Farley, John Mikula, and Albert Ray to the inactive roster. |
| 10-18-1965 | The Washington Xenomorphs have moved Tony Moriarty, E.L. Ulinski, John Mikula, Albert Ray, and John Farley to the active roster. The Washington Xenomorphs have moved Richard Studdard, Bill Mallory, Al Compton, Eddie Brown, and Bill Bagby to the inactive roster. |
| 10-04-1965 | The Washington Xenomorphs have moved Paul Sanders, Richard Studdard, Bill Bagby, Joe Currivan, and Max Ariail to the active roster. The Washington Xenomorphs have moved Larry Walton, Albert Ray, Elmer Isom, John Mikula, and Pete Burgess to the inactive roster. |
| 09-20-1965 | The Washington Xenomorphs have moved John Mikula to the active roster. The Washington Xenomorphs have moved Elmer Isom to the inactive roster. |
| 09-20-1965 | The Washington Xenomorphs have acquired John Mikula from the waiver wire. |
| 09-05-1965 | The Buffalo Vinegar Strokes have moved Derek Chorak, Jim Bellisari, John Sedoris, and Tom Manley to the active roster. The Buffalo Vinegar Strokes have moved Bill Dudish and Chuck Thomas to the inactive roster. |
| 09-05-1965 | The Buffalo Vinegar Strokes have waived John Mikula. |
Defensive End