Numbers in this table represent the number of minutes played at each position. ST represents special teams positions other than K or P.
| Date | Transaction |
| 02-28-1984 | Bill Diaz has retired from football. |
| 08-08-1983 | The Virginia Copperheads have waived Bill Diaz. |
| 08-23-1982 | The Virginia Copperheads have moved Eric Shedd, Bob Rose, and Erik Hartwig to the active roster. The Virginia Copperheads have moved Bill Diaz, Shane Mulleneaux, and Paige Smith to the inactive roster. |
| 12-28-1981 | The Virginia Copperheads have moved Bill Diaz to the active roster. The Virginia Copperheads have moved Bob Crowell to the inactive roster. |
| 10-19-1981 | The Virginia Copperheads have moved Bob Clark and Len Riesenberg to the active roster. The Virginia Copperheads have moved Alex McCray and Bill Diaz to the inactive roster. |
| 09-01-1980 | The Virginia Copperheads have moved Bill Diaz, Paul Johnson, and Mo Cole to the active roster. The Virginia Copperheads have moved Bob Crowell, Colt Cooper, and Carl Collins to the inactive roster. |
| 08-11-1980 | The Virginia Copperheads have removed Bill Diaz from the trade block. |
| 08-04-1980 | The Virginia Copperheads have moved Bob Crowell, Len Riesenberg, Joe Minter, Keith Dyson, Nate Mosley, Darnay Dexter, and Carl Collins to the active roster. The Virginia Copperheads have moved Bill Diaz, Doc Baumgartner, George Terrell, Paige Smith, Dave Thornton, Mo Cole, and Shaun Maack to the inactive roster. |
| 10-16-1978 | The Oakland Sharks have moved Knute Stubblefield and Bill Diaz to the active roster. The Oakland Sharks have moved Pete Marshall and Tyrone Mertens to the inactive roster. |
| 10-02-1978 | The Oakland Sharks have moved Doc Baumgartner to the active roster. The Oakland Sharks have moved Bill Diaz to the inactive roster. |
| 09-11-1978 | The Oakland Sharks have moved Bill Diaz to the active roster. The Oakland Sharks have moved Nate Mosley to the inactive roster. |
| 08-28-1978 | The Oakland Sharks have placed Bill Diaz on the trade block. |
| 08-21-1978 | The Oakland Sharks have moved Nate Mosley to the active roster. The Oakland Sharks have moved Bill Diaz and Doc Baumgartner to the inactive roster. |
| 09-22-1974 | Trade #30904 has been completed between the San Francisco Sharks and the Saskatchewan Yeti. The Saskatchewan Yeti receive Draft Pick - 1977 Round 4 (SF) from the San Francisco Sharks in exchange for Bill Diaz (DE). |
| 09-02-1974 | The Saskatchewan Yeti have placed Bill Diaz on the trade block. |
| 08-12-1973 | The Saskatchewan Yeti have moved Bill Diaz to the active roster. The Saskatchewan Yeti have moved Mike Cadile to the inactive roster. |
| 08-06-1973 | The Saskatchewan Yeti have moved Joe Moran, Kervin Nesser, Chris Lafleur, Scott Fay, Ronnie Murphy, Joe McKenzie, Chad Wonsley, Pat Williams, Zenon Barber, Chuck Mungavin, Bobby Gay, Donald Manzo, Emil Minor, Mike Stacy, and Todd Briggs to the active roster. The Saskatchewan Yeti have moved Ramey Fryer, Kyle Johnson, Bill Diaz, Lee Figaro, J.J. Schneller, Paul Britt, Ed Koart, Raheem Poole, Herb Roque, Tiffany Swarovski, Pete Clair, Maury Tesser, Jim Hayes, Don Schultz, Peck Dudley, Ray Cannon, and John Murtagh to the inactive roster. |
| 09-24-1972 | The Saskatchewan Yeti have moved Bill Diaz to the active roster. The Saskatchewan Yeti have moved Glen Montgomery to the inactive roster. |
| 09-11-1972 | The Saskatchewan Yeti have acquired Bill Diaz from the waiver wire. |
| 09-10-1972 | The Charlotte Brontes have automatically waived Bill Diaz to comply with the 53-man roster limit. |
Defensive End