Nickal, an elite wrestler, took de Ridder down in the first round, but an eventual scramble saw him wind up on his back in a rarity. In the second, de Ridder stayed on his feet against Nickal and started working knees and punches to the body. They started to take their toll, and one final one crumbled Nickal and his unbeaten record.

After he delivered a left strike that staggered Bo Nickal backwards, UFC middleweight Reinier de Ridder (20-2) surged forward with a left knee to his opponent’s abdomen. Nickal (7-1) collapsed near the cage before the referee called the fight in round two in favor of the Netherlands-born fighter.

Bo Nickal’s undefeated run in the UFC came to a crushing end courtesy of a Reiner de Ridder knee to the liver in the second round of Saturday night’s UFC Des Moines event.