Before finishing his career in December 2001 orthodox boxer Koon built up a record of 27 wins, 1 draws, and 9 losses, starting at age 17 on June 1994 and ending 7 years later at . The longest KO streak that Koon has ever had is 5 throughout his 38 fights and his longest winning streak is 8 wins. This started on June 1994 and came to an end on November 2001.
Showing his superior boxing ability in an impressive debut, Koon picked up the win against Lenzell Harris and became only one of 2 people to have taken him the full 4 round distance. Koon's rise in boxing continued with 21 fights against fighters such as Tim Mitchell, Orin Osbey and Victor Ramos. He had a mixed start to his career but mostly successful so far.
The first defeat of Koon's career came against Gary Richardson on January 10th, 1995. This took his career record to 3-1-0. On January 10th, 1995, Koon took on and was defeated over the distance by Gary Richardson in his first career defeat. Koon lost via PTS in a valiant effort. 17 wins followed where Koon went on to fight Orin Osbey, Tim Mitchell and Victor Ramos amongst others, prolonging his win streak.
On September 26th, 1998, Koon took on and was defeated by Rhoshii Wells meaning his career tally went to 17-4-1. Koon was beaten by Rhoshii Wells in the 8th round. Koon had only ever been stopped 2 times previously in his career. With a probably less than successful career to date, 3 fights followed for Koon including against 5th person to go the distance with Danilo Haussler, 6th person to go the distance with Markus Beyer and 15th person to defeat Angelo Simpson taking his record to 18-6-1.
Koon's next defeat of his career came against Tony Ayala jr on September 24th, 1999 taking his career record to 18-7-1. Koon failed to go into the later rounds with Ayala jr, with Ayala jr stopping him in the 4th round and becoming the 3rd person to stop Koon. Koon then went on to fight 4th stoppage defeat to Ole Klemetsen and 10th person to stop Tracy Barrios (Round 3 KO) in his next 2 ensuring his record was 19-8-1
Chris Mills was the next fight for Koon on February 6th, 2000 and also his next career win. Mills was stopped in the 5th round via TKO crowning Koon as the first person to stop this opponent.
Koon entered his next fight with a mostly successful record of 20-8-1 and took this to 21 wins with a win against James Stokes on March 20th, 2000 via KO. Koon was the 19th person to stop James and he did it in the 3rd round via KO. The fight was due to last 10 rounds.
The next defeat of Koon's career came against Bruno Girard on December 22nd, 2001. This took his career record to 27-9-1. This turned out to be Koon's last career fight, bringing Koon's 38 fight career to an end on November 22nd, 2018. Girard was too much for Koon and became the 5th person to stop him.