Marcus "The Irish Hand Grenade" Davis may have hit the end of the line.

The 38-year-old warrior competed at the International Sport Karate Association (ISKA) Worlds Collide event yesterday in Dublin, Ireland and was knocked out in brutal fashion by the unheralded Mark Casserlay in a kickboxing/muay Thai bout.

The loss comes on the heels of a split decision defeat suffered against Chuck O'Neil this past October and has Davis considering hanging up his gloves. Davis posted the following message to his Facebook page after the fight.

Sorry all.. I'm just not pulling the trigger like I did even 5 years ago. I have days in the gym where i cant be touched but days where I'm lethargic. Consistency is key to being a professional fighter. My reactions have slowed. I'm not going to make my decision now until I am with my family but this wouldn't have happened 10-5 years ago. Time I think has caught up with me. I will be with my wife tomorrow and we will discuss my career. From the bottom of my heart I thank everyone who has ever supported me... God bless

Davis competed in the UFC at lightweight and welterweight from 2006 until 2011. Over that time, he picked up notable wins over Paul Taylor and Chris Lytle. He was cut from the promotion after posting a 1-4 stretch that included two knockouts and a submission defeat.

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