Czyz had a quick start to his professional boxing career in the early 1980s, and he was soon in line for a shot against world
middleweight champion
Marvin Hagler. He had to start from scratch, however, after suffering a one-sided, 10-round loss at the hands of veteran
Mustafa Hamsho on November 20, 1982 in a bout that was nationally televised. Czyz went up in weight, put another string of wins together, and in September 1986, he finally found himself in a ring with an undefeated world champion,
IBF light heavyweight champion
Slobodan Kačar (Olympic Gold medallist of 1980). Czyz beat him in five rounds. Czyz made three defenses: a one-round defeat of David Sears, a see-saw second-round KO of Willie Edwards, and a fifth-round TKO of Jim McDonald - before taking on 'Prince'
Charles Williams in October 1987. Czyz scored an early knockdown of Williams, yet the challenger not only stayed in the fight, but also hammered shut Czyz' left eye en route to scoring a TKO victory and thus seizing the title after nine rounds of boxing. Czyz then lost a decision to
Dennis Andries in May 1988, followed by a couple of victories, in turn followed by two cracks at the world title in 1989. Czyz, despite truly good efforts on his part in both challenges, lost both of them - a 12-round decision to Virgil Hill in North Dakota for the WBA version in March, and a 10th-round TKO loss to Williams in an IBF title rematch in June. Czyz went on to stop then-undefeated
Andrew Maynard in seven rounds (the second undefeated Gold medallist he KO'd) in June 1990, then jumped up to cruiserweight. He challenged
Robert Daniels for Daniels'
WBA world cruiserweight championship in March 1991, and won a unanimous decision. Two defenses, against Bash Ali and
Donny Lalonde, were made (both by unanimous decision) before Czyz vacated the title. In 1994, Czyz became a television boxing analyst working alongside
Steve Albert and
Ferdie Pacheco whilst continuing his boxing career. The trio covered fights in many locations worldwide. In December 1994, he covered the first world title fight ever held in
Ecuador as a member of
Showtime's crew. In 1996, he stepped up to the heavyweight division, but lost by
knockout in five rounds to
Evander Holyfield and quickly retired. Czyz fought one last time in 1998, losing by second-round TKO to South African
Corrie Sanders. Czyz continued doing
color commentary for Showtime, but was let go after pleading guilty to his fourth drunken-driving offense in six years after being caught speeding in
Readington Township, New Jersey. Czyz's case received a lot of attention as he was a multiple repeat
DUI case, and was a driver behind the NJ Assembly revisiting its legislation. Czyz, who was a
Raritan Township, New Jersey resident at the time, was given a six-month license suspension for each of his three drunken driving convictions in 1998, 1999 and 2000. It was discovered that he was sentenced improperly as a first-time offender after his fourth arrest, which occurred in February 2003 in Readington Township, where he was caught driving with a blood-alcohol level of 0.14 percent. The state limit at that time was 0.10 percent. ==Professional boxing record==