9. Gary Goodridge (23 losses)
It hurts to have to put Gary Goodridge on here, considering how beloved he was by many during the early days of the UFC and Pride FC.
His career MMA record ended up at 23W-23L, but had Goodridge hung up the gloves before closing out his career with an 8 fight losing streak, he would have retired with a respectable 23W-15L record.
He didn’t fair much better in kickboxing either, where he closed out his career with a cool 12 fight losing streak. His career kickboxing record was 12W-24L