The MMA gods can be very cruel.

One minute you can be on top, the next you are at the very bottom.

Such is the case for heavyweight Alistair Overeem. His fight last night at UFC Fight Night 26 was almost a perfect example of how quickly a career can change.

Needing a win over respectable contender Travis Browne, Overeem seemed like the “Demoltion Man” early on, hammering Browne with big fists. He looked like a heavyweight contender once again.

However, just moments later Overeem ate a picture-perfect front kick that led to a surprising KO loss.

Now Overeem finds himself having lost two straight fights and, when you mix in a suspension that cancelled a title fight in 2012, he could be on the chopping block. It’s been a meteoric fall for Overeem, but he’s not the only one that has been in similar position. Here’s a few other notable quick collapses.

Chuck Liddell – The Iceman seemed unbeatable when he was the UFC Light Heavyweight champion in the mid-2000s, but that all changed with a Quinton “Rampage Jackson” hook. One big punch from Jackson ended Liddell’s title reign and set the course for his surprising demise in the UFC. Liddell went on to go 1-5 over the next three years, losing four times by KO. He was forced to retire in 2010 after being blasted by Rich Franklin.

Brock Lesnar – Lesnar seemed too good to be true, and he was. The physically imposing heavyweight broke onto the UFC scene in 2008 and was champion within a year. However, once Lesnar started to meet up with heavyweights that could match his strength and wrestling ability, he quickly turned into a softy. Though he beat Shane Carwin by submission, he was pummeled in the first round and that seemed to destroy his mystique. From there Cain Velasquez and Alistair Overeem ran right through him and Lesnar decided to retire from the sport.

B.J. Penn – Though Penn is still considered by many to be the greatest lightweight in MMA history, he didn’t go out on a high point in the UFC. He seemed to be a human wrecking ball at 155 pounds after dominating the likes of Kenny Florian, Sean Sherk and Diego Sanchez, but a pair of decision losses to Frankie Edgar seemed to put his career on the wrong track. While he did pick up a quick KO of Matt Hughes after, he looked sluggish in a draw against Jon Fitch and was thoroughly picked apart by Nick Diaz and Rory MacDonald before taking time away. The fear Penn used to put into his opponents is long gone.