Professional career
Sekorski made his professional debut on January 21, 1981, with a four-round decision win against Rick Kellar. He won his first 13 professional matches, losing for the first time to 41-5-2 Marvin Camel on May 21, 1983, in Billings, Montana. Sekorski won three more times before his next loss, to 11-1 Pierre Coetzer in Johannesburg, South Africa. Sekorski continued to fight boxers of a high calibre, his biggest win being a sixth-round TKO of former world champion Leon Spinks in Detroit Lakes, Minnesota on August 2, 1986. Sekorski won the vacant Minnesota State Heavyweight title with a 3rd-round TKO against Percell Davis in August 1988, then lost a fight for the WBC Continental Americas heavyweight title to former WBA world Heavyweight champion Michael Dokes in December of the same year. Thereafter Sekorski would lose more than he won, concluding his career with a loss to Jimmy Lee Smith on November 22, 1993.
Sekorski also lost a fight to the returning George Foreman,
Overall, Sekorski compiled a professional record of 23-11 with 13 wins by knockout during a twelve-year professional career. [1] By the time he hung up the gloves for good Sekorski had faced a number of top-ranked contenders and former world champions.
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Jimmy Lee Smith
Mounds View, Minnesota, United States 
Atlantic City, New Jersey, United States 
Michael Murray
Las Vegas, Nevada, United States 
Adilson Rodrigues 
Francesco Damiani 
Walter Daniel Falconi
Pierre Coetzer 
Portland, Oregon, United States 
Billings, Montana, United States 
Edmonton, Alberta, Canada 
Lupe Guerra
Amery, Wisconsin, United States 
Sioux Falls, South Dakota, United States