| Trans Num | Date | Details |
| 1988.5 | 2023-06-27 | Hawkins Tigers trade Jerry Reuss to the Houston Buffaloes for Ken Phelps. |
| 1987.2 | 2022-09-16 | Little Rock Roaring Weasels trade Juan Agosto, Jose DeLeon, Jim Dwyer, Ken Phelps, Tim Teufel, and Andy Van Slyke to the Houston Buffaloes for Rafael Palmeiro. |