Thomaselli played three years in the NFL with the Houston Oilers and the Green Bay Pakcers before joining Montreal as a free agent in April of 1985. As a running back, Thomaselli was more effective as a receiver coming out of the backfiled as he had 25 catches in just 6 games.
| Year | Team | GP | TC | Yds | Avg | TD | Long |
|---|---|---|---|---|---|---|---|
| 1985 | MON | 6 | 26 | 98 | 3.8 | 3 | 15 |
| Year | Team | Rec | Yds | Avg | TD | Long |
|---|---|---|---|---|---|---|
| 1985 | MON | 25 | 201 | 8 | 0 | 23 |
| Year | Team | F | FL |
|---|---|---|---|
| 1985 | MON | 1 | 1 |