On Saturday, March 29, 2025, at Arena CDMX in Mexico City, an exciting bantamweight bout is set to unfold between Mexico’s own David “Black Spartan” Martinez and Brazil’s Saimon Oliveira. This matchup, featured on the main card of UFC Fight Night: Moreno vs. Erceg, presents a compelling narrative for fight enthusiasts and bettors alike.
David Martinez vs Saimon Oliveira Preview
David Martinez, aged 26, boasts an impressive professional record of 11 wins, 1 loss, and no draws, with a notable 82% knockout ratio. Standing at 5’5″ (167 cm) with a reach of 66″ (168 cm), Martinez fights from an orthodox stance. His journey to the UFC is marked by a remarkable achievement in Combate Global, where he secured three victories in a single night to claim the bantamweight championship. This feat included a knockout win over former UFC fighter Francisco “Cisco” Rivera, highlighting Martinez’s endurance and striking prowess.
In contrast, Saimon Oliveira, 33, enters the octagon with a professional record of 18 wins, 5 losses, and no draws, featuring a 28% knockout ratio. He stands taller at 5’7″ (172 cm) and also adopts an orthodox stance. Oliveira’s experience is evident, having faced a diverse range of opponents throughout his career. However, his recent performances have been inconsistent, with losses in each of his last two fights, which came back in 2022 and 2023.
Betting Insights
As the fight approaches, betting markets have positioned David Martinez as the clear favorite. Current odds from Sportzino are as follows:
- David Martinez: -395 (Bet $395 to win $100)
- Saimon Oliveira: +330 (Bet $100 to win $330)
These odds reflect confidence from the sportsbooks in Martinez’s abilities, especially considering his recent form and the advantage of fighting on home soil.
For those interested in method-of-victory bets, the following options are available:
- David Martinez by Decision or Technical Decision: +115
- David Martinez by KO, TKO, or Disqualification: +150
- David Martinez by Submission: +2000
- Saimon Oliveira by Decision or Technical Decision: +900
- Saimon Oliveira by KO, TKO, or Disqualification: +1200
- Saimon Oliveira by Submission: +550
These lines suggest that bookmakers anticipate Martinez securing a victory, most likely by decision or knockout.
David Martinez vs Saimon Oliveira Prediction

Martinez by KO (+150) over Oliveira
220K Gold Coins & 10 FREE Sweeps Coins
- 9 of Martinez’s 11 wins have come by knockout in his MMA career so far.
- Oliveira is 0-2 in UFC and we expect him to struggle here as well.
Analyzing the available data, several factors favor David Martinez in this bout. His impressive knockout ratio indicates significant striking power, and his ability to endure and succeed in high-pressure situations, as demonstrated in the Combate Global tournament, speaks to his resilience and stamina. Additionally, competing in his home country may provide an extra boost, both psychologically and in terms of crowd support.
While Saimon Oliveira brings a wealth of experience and a slight height advantage, his lower knockout ratio and recent inconsistent performances raise questions about his ability to handle Martinez’s aggressive style. Oliveira’s best path to victory may lie in leveraging his experience to control the pace and potentially exploit any openings on the ground, given Martinez’s striking focus.
Considering these factors, the prediction leans towards David Martinez securing a victory, likely by knockout or technical knockout. Bettors might find value in wagering on Martinez to win by KO/TKO at +150, balancing risk and potential return. However, as with all combat sports, outcomes can be unpredictable, and it’s essential to consider all variables before placing a bet.