Originally from San Diego, California, Halsey began his career in combat sports from a young age as a wrestler and judoka.
Halsey attended Rancho Buena Vista High School where he competed in wrestling and excelled.
Halsey also competed in football as a linebacker and earned First Team All-San Diego County honors.
Halsey won the bout via TKO in the first round after using his superior wrestling to take the fight to the ground, transition immediately to the back, and unload with punches to the head until he earned the victory.
[3] In March 2014, Halsey entered into the Bellator Season Ten middleweight tournament when Dan Cramer versus Jeremy Kimball was cancelled.
[11] After dominating the opening round with his grappling, Halsey lost the fight via TKO in the second after absorbing a kick to the liver.
On June 1, 2017, Halsey rematched Alexander Shlemenko at M-1 Challenge 79 and was submitted by strikes after 25 seconds of the first round, marking his third consecutive loss after starting his career 9-0.
[15] Halsey and his wife Amber gave birth to their first child, daughter Savannah Rose, in June 2015.