From 1986 to 1989, MImbs had tryouts with the New York Jets, Dallas Cowboys and Phoenix Cardinals of the NFL.  Mimb's stint with Phoenix included time as a replacement player during the strike in 1987.  The Winnipeg Blue Bombers signed Mimbs for the 1990 season after his release by Phoenix, and Mimbs had  fantastic rookie season.  In 1990, MImbs ran for 1341 yards and caught 71 passes for another 536 yards.  Mimbs followed that up in 1991 with an even better season, rushing for  1769 yards rushing and 39 catches for 438 yards.  Mimbs was named to the All-Canadian teain both of those first two seasons, won the CFL rushing title in both seasonsm and was the runner-up for the Most Outstanding Player in 1991.  Despite that incredible success, Mimbs was released just seven games into the 1992 season by the Bombers with just 392 yards on only 76 carries which was a far cry from the number of touches he got in his first two seasons.  The BC Lions picked up Mimbs as a gree agent and he played 3 games for them in 1992 and just two games in 1993 before Mimbs was released for the second time.  After sitting out the 1994 season, Mimbs tried to revive his career by signing with the Saskatchewan Roughriders in Septemmber of 1995.  Playing in only six games as the season wound down, Mimbs showed signs of returning to his old form, running for 444 yards.  In a full season in 1996, Mimbs showed he was back to his old form as he led the CFL in rushing for the third time in his career with 1403 yards.  Mimbs also earned his third All-Canadian honour and was the Western nominee and eventual runner-up for the Most Outstanding Player in the CFL.  Time and perhaps injuries seemed to catch up to Mimbs in his final season in 1997 as he ran for 493 yards in just ten games.  Mimbs finished his career with 6162 yards rushing.