Martínez made his professional debut against Juan Ignacio Haran on 25 August 2017. He won the fight by a fourth-round stoppage. Martínez amassed a 10–0 record during the next two years, with six victories coming by way of stoppage.[2]
Martínez had his first step-up fight on 16 December 2019, as he was scheduled to challenge the reigning WBC Silver super flyweight champion Athenkosi Dumezweni. The bout took place in East London, Eastern Cape in South Africa, and was Martínez's first outside of Argentina.[3] He won the fight by an upset eleventh-round technical knockout, stopping Dumezweni with a flurry of punches at the 0:23 minute mark.[4]
Martínez faced Gonzalo Garcia Duran in a stay-busy fight on 13 August 2021, at the Hotel Atlantis The Palm in Dubai.[7] He won the fight by a fourth-round technical knockout, stopping Duran with eight seconds left in the round.[8]
IBF super flyweight champion
Martínez vs Ancajas
Martínez was booked to challenge the reigning IBFsuper flyweight champion Jerwin Ancajas on 26 February 2022, in what was Ancajas' tenth title defense. The title fight was scheduled for the undercard of the Chris Colbert and Hector Garcia WBA super featherweight bout, which took place at the Cosmopolitan in Las Vegas, Nevada.[9] Despite entering the fight as the underdog,[10] Martínez captured the title by an upset unanimous decision. One judge scored the fight 117–111 in his favor, while the remaining two judges awarded him a 118–110 scorecard. Martínez landed 427 out of 1046 total punches thrown, while Ancajas landed 192 out of 816 total punches.[11]
Martínez vs Ancajas II
On 22 July 2022, it was revealed that Ancajas had invoked his rematch clause. As such, Martínez was booked to face Jerwin Ancajas in an immediate rematch in his first championship defense, which took place on 8 October 2022,[12] at the Home Depot Center in Carson, California. The bout was scheduled for the undercard of the Sebastian Fundora and Carlos Ocampo interim WBC middleweight title bout.[13] He retained the title by unanimous decision, with two scorecards of 118–110 and one scorecard of 119–109.[14]
Martínez vs Bornea
On 16 December 2022, the IBF formally ordered Martínez to make a mandatory title defense against Jade Bornea.[15] As the pair failed to reach terms, a purse bid was called for 17 January 2023,[16] which was postponed to allow for further negotiations,[17] but eventually rescheduled for 14 February and won by TGB Promotions with a bid of $25,000.[18][19] The championship bout took place on 24 June 2023, at the Minneapolis Armory in Minneapolis, Minnesota.[20] Martínez won the fight by an eleventh-round technical knockout.[21]
