| Date | Transaction |
| 02-28-1971 | Bob Leach has retired from football. |
| 10-26-1970 | The Omaha Blaze have waived Bob Leach. |
| 10-12-1970 | The Omaha Blaze have moved Kenny Davis to the active roster. The Omaha Blaze have moved Bob Leach to the inactive roster. |
| 10-04-1970 | The Omaha Blaze have moved Bob Leach to the active roster. The Omaha Blaze have moved Kenny Davis to the inactive roster. |
| 10-04-1970 | The Omaha Blaze have acquired Bob Leach from the waiver wire. |
| 08-31-1970 | The Calgary Bisonauts have moved Dean Marquand, Darnell McCrary, Mike Cadile, George Sears, Ron Piccolo, Adam Hirsch, Garland Overstreet, and Ronnie Marquart to the active roster. The Calgary Bisonauts have moved Lawrence Sanders, Gary Hamilton, Kurt McGrail, Flip Hunley, Mike Bundren, Fred Green, Brian Bell, and Hal Thurlow to the inactive roster. |
| 08-31-1970 | The Calgary Bisonauts have waived Bob Leach. |
| 08-17-1970 | The Calgary Blue Bolts have moved Gary Hamilton, Stump Mitchell, and Barry Harvey to the active roster. The Calgary Blue Bolts have moved Scott Ardizzone, Chris Jones, Bob Leach, Pat Marvaso, and Ronnie Gaines to the inactive roster. |
| 04-28-1968 | The Calgary Tomahawks have moved Bob Leach, Don Boyd, and Don Kinard to the active roster. The Calgary Tomahawks have moved James Simmons, Sam Holman, Chief Dan George, and Antwan Kidd to the inactive roster. |
| 01-01-1968 | The Calgary Tomahawks have moved Ricky Guggemos, Cal Boden, and Ronnie Marquart to the active roster. The Calgary Tomahawks have moved Bob Leach, Don Kinard, and Major Rowan to the inactive roster. |
| 11-05-1967 | Trade #22311 has been completed between the Calgary Tomahawks and the Syracuse Shaman. The Syracuse Shaman receive Bo McCusker (WR) from the Calgary Tomahawks in exchange for Bob Leach (TE). |
| 08-07-1967 | The Syracuse Shaman have moved Fred Spears to the active roster. The Syracuse Shaman have moved Bob Leach to the inactive roster. |
| 04-30-1967 | The Syracuse Shaman have moved Bob Leach to the active roster. |
| 10-17-1966 | The Syracuse Shaman have moved Robert George to the active roster. The Syracuse Shaman have moved Bob Leach to the inactive roster. |
| 08-30-1965 | The Syracuse Shaman have moved Bob Leach and Derwin Manning to the active roster. |
| 01-18-1965 | The Syracuse Shaman have moved Bob Leach to the inactive roster. |
| 10-12-1964 | Trade #18991 has been completed between the Hartford Chimeras and the Syracuse Shaman. The Syracuse Shaman receive Reggie Tiumalu (G), Bob Leach (TE) from the Hartford Chimeras in exchange for Pamela Thompson (S), Milt Thayer (RB). |
| 09-13-1964 | Trade #18800 has been completed between the Miami Dolphins and the Hartford Chimeras. The Hartford Chimeras receive Bob Leach (TE) from the Miami Dolphins in exchange for Draft Pick - 1967 Round 3 (HAR). |
| 09-07-1964 | The Miami Dolphins have moved Milan Mili to the active roster. The Miami Dolphins have moved Bob Leach to the inactive roster. |
| 08-30-1964 | Bob Leach of the Miami Dolphins is injured with a leg contusion and is expected to be out for approximately 8 days. |
| 10-13-1963 | Bob Leach of the Miami Dolphins is injured with an ankle ligament sprain and is expected to be out for approximately 23 days. |
| 09-03-1962 | The Miami Dolphins have moved Bob Leach to the active roster. |
Tight End