Originally from San Diego, California, Halsey began his career in combat sports from a young age as a wrestler and judoka. Halsey's father wrestled at UCLA and Halsey has two brothers who also competed at NCAA Division I colleges. Halsey attended Rancho Buena Vista High School where he competed in wrestling and excelled. He won a CIF state championship, and finished with the best overall record in school history with 150-16 and 80 pins. Halsey also competed in football as a linebacker and earned First Team All-San Diego County honors. Halsey originally attended Fresno State University, transferring to California State University at Bakersfield his sophomore year after Fresno State dropped their wrestling program. Halsey was very successful at CSUB, finishing 7th at the NCAA Division 1 National Championships and earning NCAA Division 1 All-American honors. Halsey specialized in folkstyle wrestling.[2]
Mixed martial arts career
Early career
Halsey made his professional debut in 2012 against Chris Golz. Halsey won the bout via submission in the first round.
In his second fight, Halsey faced UFC veteran Shonie Carter. Halsey won the bout via unanimous decision.
Bellator MMA
After winning his first two fights, Halsey was signed by Bellator Fighting Championships and made his debut against Rocky Ramirez at Bellator 92 on March 7, 2013. Halsey won by technical submission in the third round.
Halsey fought Joe Yager at Bellator 96 on June 19, 2013, and won the bout via split decision.
Halsey faced UFC veteran Hector Ramirez at Bellator 106 on November 2, 2013. 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]
Season Ten Middleweight Tournament winner
In March 2014, Halsey entered into the Bellator Season Ten middleweight tournament when Dan Cramer versus Jeremy Kimball was cancelled.[4] He fought Joe Pacheco at Bellator 116 on April 11, 2014. Halsey won the bout via unanimous decision. Halsey was scheduled to face Brett Cooper in the finals at Bellator 119 on May 9, 2014.[5] The bout, however, was delayed due to an injury sustained by Cooper.[6] The Cooper fight took place at Bellator 122 on July 25, 2014.[7] Halsey won the bout via submission in the first round.
Halsey was expected to make his first title defense against Kendall Grove on May 15, 2015, at Bellator 137.[9] However, Halsey failed to make weight and was subsequently stripped of the middleweight championship.[10] Halsey won the fight via TKO in the fourth round.
Halsey faced John Salter on June 17, 2016, at Bellator 156. After sustaining an early cut via head kick, Halsey went on to lose the bout via submission in the first round.[13]
On October 5, 2016, Halsey was released from Bellator.
M-1 Global
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.