| Date | Transaction |
| 02-28-2074 | Keith May has retired from football. |
| 09-14-2071 | The Calgary Royals have waived Keith May. |
| 05-03-2071 | The Calgary Royals have moved A.D. Jacobs, Sammy Smith, Toran Sczurek, Nelson Michael, Greg Smith, Frank Stallings, and Jack Downey to the active roster. The Calgary Royals have moved Olin Spruill, Doug Evans, Wilma Wannanabe, Dick Kremer, Keith May, Michael McDonough, and Tony Sanders to the inactive roster. |
| 09-01-2070 | The Calgary Royals have moved Jackie Mack, Keith May, Bobby Lawrence, Joel Garrett, Roy Wright, Michael McDonough, and Tony Sanders to the active roster. The Calgary Royals have moved A.D. Jacobs, Sammy Smith, Nelson Michael, Greg Smith, Anthony Horton, Frank Stallings, Frank Zombek, and Scott McKissack to the inactive roster. |
| 08-18-2070 | The Las Vegas Royals have moved JaJuan Carter, Frank Zombek, and Jack Downey to the active roster. The Las Vegas Royals have moved Keith May, Bobby Lawrence, and Jason Nelms to the inactive roster. |
| 09-02-2069 | The Las Vegas Royals have moved Keith May to the active roster. |
| 09-01-2069 | The Las Vegas Royals have removed Keith May from the trade block. |
| 04-28-2069 | The Las Vegas Royals have placed Keith May on the trade block. |
| 12-31-2068 | The Las Vegas Royals have moved Vern Krouse to the active roster. The Las Vegas Royals have moved Keith May to the inactive roster. |
| 12-31-2068 | The Las Vegas Royals have moved Dana Lowery, Keith May, and Randall Vincent to the active roster. The Las Vegas Royals have moved Robert Plummer, Frank Franklin, and Bobby Lawrence to the inactive roster. |
| 12-24-2068 | The Las Vegas Royals have moved Mike Davies to the active roster. The Las Vegas Royals have moved Keith May to the inactive roster. |
| 12-23-2068 | Keith May of the Las Vegas Royals is injured with a leg contusion and is expected to be out for approximately 11 days. |
| 09-03-2068 | The Las Vegas Royals have removed Keith May from the trade block. |
| 04-29-2068 | The Las Vegas Royals have placed Keith May on the trade block. |
| 01-30-2067 | The Las Vegas Royals have moved Booger McFarland, Keith May, Bobby Lawrence, and Altie Mattos to the active roster. The Las Vegas Royals have moved Audray Rouse, Conway Sheeks, and Bob Kilmer to the inactive roster. |
| 01-03-2067 | The Las Vegas Royals have moved Audray Rouse, Conway Sheeks, Jackie Mack, Bob Kilmer, and Fred Tuipala to the active roster. The Las Vegas Royals have moved Booger McFarland, Keith May, Bobby Lawrence, and Altie Mattos to the inactive roster. |
| 12-27-2066 | The Las Vegas Royals have moved Keith May to the active roster. The Las Vegas Royals have moved Jackie Mack to the inactive roster. |
| 12-20-2066 | The Las Vegas Royals have moved Jason Nelms to the active roster. The Las Vegas Royals have moved Keith May to the inactive roster. |
| 12-13-2066 | The Las Vegas Royals have moved Keith May to the active roster. The Las Vegas Royals have moved Jason Nelms to the inactive roster. |
| 09-05-2066 | The Las Vegas Royals have moved Fred Tuipala, Obert Sauls, Audray Rouse, Jamie Stein, Bob Brumfield, Michael McDonough, Bob Kilmer, and Birdie McEndoo to the active roster. The Las Vegas Royals have moved Frank Franklin, Bobby Lawrence, Altie Mattos, Gerald Craig, and Keith May to the inactive roster. |
| 08-09-2066 | The Las Vegas Royals have moved Glen Gehrke, Derrick Stills, George Clark, Jim Wilson, Frank Franklin, Keith May, and Altie Mattos to the active roster. The Las Vegas Royals have moved Birdie McEndoo, Don Krenk, Alton Martin, Jamie Stein, Audray Rouse, Bob Brumfield, Hal Dingle, and Vinnie Christianson to the inactive roster. |
Running Back