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 |
| 02-28-1990 | Bob Roberts has retired from football. |
| 09-05-1988 | The Las Vegas Sinners have waived Bob Roberts. |
| 10-27-1986 | The Las Vegas Sinners have moved John Mikeska to the active roster. The Las Vegas Sinners have moved Bob Roberts to the inactive roster. |
| 10-20-1986 | The Las Vegas Sinners have moved Bob Roberts to the active roster. The Las Vegas Sinners have moved John Mikeska to the inactive roster. |
| 09-22-1986 | The Las Vegas Sinners have moved Dan Linderman to the active roster. The Las Vegas Sinners have moved Bob Roberts to the inactive roster. |
| 09-15-1986 | The Las Vegas Sinners have moved Bob Roberts to the active roster. The Las Vegas Sinners have moved Dan Linderman to the inactive roster. |
| 09-01-1986 | The Las Vegas Sinners have moved Curtis Harris, Larry Oldham, Carlton Spencer, Alan Washburne, Drederick Tatum, Gurton Buster, Dan Linderman, Peter Hawkins, Adam Cobb, and G.M. Kasper to the active roster. The Las Vegas Sinners have moved Gary Ellard, Russ Kaiser, Mark Odson, Amp Baker, Jim Henson, Bob Roberts, and Tom Morrison to the inactive roster. |
| 09-02-1985 | The Las Vegas Sinners have moved Carlton Spencer, Dan Linderman, and Bob Roberts to the active roster. The Las Vegas Sinners have moved Roy Manning, Todd Gaines, and Tom Morrison to the inactive roster. |
| 08-26-1985 | The Las Vegas Sinners have moved John Grobby to the active roster. The Las Vegas Sinners have moved Bob Roberts to the inactive roster. |
| 08-26-1985 | The Las Vegas Sinners have acquired Bob Roberts from the waiver wire. |
| 08-18-1985 | The Cleveland Crüe have waived Bob Roberts. |
| 09-30-1984 | The Cleveland Crüe have moved Steve Brown to the active roster. The Cleveland Crüe have moved Bob Roberts to the inactive roster. |
| 09-02-1984 | The Cleveland Crüe have moved Bob Roberts to the active roster. |
| 04-29-1984 | The Cleveland Crüe have moved Kenny Wynne to the active roster. The Cleveland Crüe have moved Darrick Ellison, Jim Okoye, Amos Delaporte, and Bob Roberts to the inactive roster. |
| 08-21-1983 | The Cleveland Crüe have moved Bob Nomellini, Roy Manning, and Bob Roberts to the active roster. The Cleveland Crüe have moved Fulton Mattiace, Kenny Wynne, Bill Thacker, and Rob Richeson to the inactive roster. |
| 08-08-1983 | The Cleveland Crüe have moved Fulton Mattiace, Kenny Wynne, Bill Thacker, John Grobby, Johnny Parlavecchio, Deon Pottios, Keith Martin, Ted Hathaway, Bill Mann, Darren Davis, Dick Harris, and Jerry Griffith to the active roster. The Cleveland Crüe have moved Ladainian Gantt, Bob Nomellini, Scott Mutryn, Roy Manning, Amos Delaporte, Joe Winston, Tracy Paige, Larry Grabinski, Steve Vant, Kurt Jones, Zach Zook, and Bob Roberts to the inactive roster. |
| 08-10-1981 | The Cleveland Crüe have moved Brody Reaves, Bob Nomellini, Earl Gibson, Roy Manning, Bob Roberts, Al Raye, Ken Webster, and Amos Delaporte to the active roster. The Cleveland Crüe have moved Carey Piel, Laval Case, Bart Todd, and Charlie Phillips to the inactive roster. |
| 09-01-1980 | Bob Roberts has been moved from TE to T by the University of Philadelphia Bighorns. |
Tackle