| Date | Transaction |
| 02-28-2019 | Alien Kein has retired from football. |
| 09-03-2018 | The St. Louis Cardinals have waived Alien Kein. |
| 08-06-2018 | The St. Louis Cardinals have moved Alien Kein to the active roster. The St. Louis Cardinals have moved Dwight Jancik to the inactive roster. |
| 08-06-2018 | The St. Louis Cardinals have acquired Alien Kein from the waiver wire. |
| 09-04-2016 | The Providence Devine have waived Alien Kein. |
| 08-08-2016 | The Providence Devine have moved Alien Kein to the active roster. The Providence Devine have moved Hal Mugg to the inactive roster. |
| 09-20-2015 | The Providence Devine have moved Alien Kein and Ray Schweder to the inactive roster. |
| 09-20-2015 | Alien Kein of the Providence Devine is injured with a partial PCL tear and is expected to be out for approximately 48 days. |
| 09-07-2015 | The Providence Devine have moved Alien Kein to the active roster. |
| 09-07-2015 | The Providence Devine have acquired Alien Kein from the waiver wire. |
| 08-30-2015 | The Memphis Mephitic Miasma have waived Alien Kein. |
| 08-10-2015 | The Memphis Mephitic Miasma have moved Gene Shell, Carl Rosenfels, Robert Pinkston, Billy Harris, and Longshot Quigley to the active roster. The Memphis Mephitic Miasma have moved Pill Pooscher, Itchy Balzak, Hung Lewis, Alien Kein, and Heinous Janus to the inactive roster. |
| 08-25-2013 | The Memphis Mephitic Miasma have moved Alien Kein and Heinous Janus to the active roster. |
| 08-05-2013 | The Memphis Mephitic Miasma have moved Poppa Duwaydoe, Elgin Kane, Cory Wade, Lyle Crosby, Micah Wish, Jim May-Ornott, Dix Enis, Derek Kyle, John Listopad, George Jeffrey, Charlie Bryant, and Lennie Smith to the active roster. The Memphis Mephitic Miasma have moved Dinger Barnes, Philbert Shattenstein, Toofless Geezerpap, Alien Kein, Dollar Zeller, Cybill Servais, Heinous Janus, Frank Fodder, Hunter Seeker, Tongan Cheek, Dag Nabbitt, and Kid Glover to the inactive roster. |
| 08-27-2012 | The Memphis Mephitic Miasma have moved Alien Kein and Kid Glover to the active roster. The Memphis Mephitic Miasma have moved Dix Enis and Jim Beecham to the inactive roster. |
| 08-06-2012 | The Memphis Mephitic Miasma have moved Dwight Wright, Merle Method, Tongan Cheek, and Dag Nabbitt to the active roster. The Memphis Mephitic Miasma have moved Kid Glover, Alien Kein, Walt Schuber, and Easley Mused to the inactive roster. |
| 11-27-2011 | The Memphis Mephitic Miasma have placed Alien Kein on the Injured Reserve list for the remainder of the season. |
| 11-27-2011 | Alien Kein of the Memphis Mephitic Miasma is injured with an MCL sprain and is expected to be out for approximately 38 days. |
| 09-15-2008 | The Memphis Mephitic Miasma have moved Alien Kein to the active roster. The Memphis Mephitic Miasma have moved Pizza Grimlin to the inactive roster. |
| 09-15-2008 | The Memphis Mephitic Miasma have changed Allen Klein's name to Alien Kein. |
| 09-15-2008 | The Memphis Mephitic Miasma have acquired Allen Klein from the waiver wire. |
| 09-08-2008 | The Edmonton Frostbite have waived Allen Klein. |
| 08-25-2008 | The Edmonton Frostbite have moved Joe Green, Izell Ragusa, Johnny Lockhart, Mark Zaeske, Ken Dubinetz, Chris P. Bacon, and R.J. Richard to the active roster. The Edmonton Frostbite have moved Al Rutkowski, Allen Klein, Knucklehead Jones, Bert Wunsch, Owen DeRent, Orville Saunders, and Gadd Zookes to the inactive roster. |
| 08-04-2008 | The Edmonton Frostbite have moved Allen Klein, Robb Greenfield, Chris Rebseaman, and Jesse Spani to the active roster. The Edmonton Frostbite have moved Jake Curcillo, Council McKyer, Jason Donnalley, and George Dempsey to the inactive roster. |
Defensive End