Martijn de Jong has seven losses against six opponents on his MMA record. For a list of Jong's best fights, refer to "Best fights of Martijn de Jong".
On July 13, 2002 Martijn de Jong faced off against Egan Inoue in a middleweight bout at age 27. He was coming in with a record of 8-7-2 (6), and Inoue was 37 years old and with a record of 10-6 (9). Jong lost the fight via 1st-round KO.
On July 6, 2001 Martijn de Jong faced off against Izuru Takeuchi in a middleweight bout at age 26. He was coming in with a record of 7-6 (5), and Takeuchi was 26 years old and with a record of 6-3-2 (1). Jong lost the fight via 3-round split decision.
On April 22, 2001 Martijn de Jong faced off against Andrei Semenov in a middleweight bout at age 26. He was coming in with a record of 7-5 (5), and Semenov was 23 years old and with a record of 16-2 (15). Jong lost the fight via 2nd-round TKO.
On September 3, 2000 Martijn de Jong faced off against Andrei Semenov in a middleweight bout at age 26. He was coming in with a record of 5-4 (3), and Semenov was 23 years old and with a record of 11-2 (10). Jong lost the fight via 2nd-round submission.
On March 5, 2000 Martijn de Jong faced off against Jose Landi-Jons in a middleweight bout at age 25. He was coming in with a record of 5-3 (3). Jong lost the fight via 1-round unanimous decision.
On October 29, 1999 Martijn de Jong faced off against Masanori Suda in a middleweight bout at age 25. He was coming in with a record of 5-2 (3), and Suda was 26 years old and with a record of 14-6 (11). Jong lost the fight via 2nd-round submission.
On December 7, 1997 Martijn de Jong faced off against Richard Plug at age 23. He was coming in with a record of 1-1 (1). Jong lost the fight via 2nd-round submission.
