Oh, doctor! David Martinez blasts Saimon Oliveira in UFC Mexico debut

They say you only get one chance to make a first impression, and David Martinez’s was just what the doctor ordered at UFC on ESPN 64.

Martinez (12-1 MMA, 1-0 UFC) turned out the lights on Saimon Oliveira (18-6 MMA, 0-3 UFC) in the first round of his UFC debut in front of his home Mexico fans – and in front of his sister in his corner, fellow UFC fighter Melissa Martinez. Martinez and his sister both are doctors, as well.

Martinez drilled Oliveira with a combination late in the first round of their bantamweight bout, then put the pressure on as he stumbled backward. A vicious knee up the middle sent the fight to the canvas, and there Martinez honed in with hammer fists until a couple were on the button.

Martinez was a massive 7-1 favorite in the fight – the most lopsided odds on the card at Arena CDMX in Mexico City.

Check out Martinez’s finish below.

HOMETOWN DEBUT DUBS 🤯

David Martinez gets the first-round finish at #UFCMexico! pic.twitter.com/ONqqpx25Ea

— UFC (@ufc) March 29, 2025

Up-to-the-minute UFC on ESPN 64 results include:

• David Martinez def. Saimon Oliveira. via TKO (punches) – Round 1, 4:38
• Kevin Borjas def. Ronaldo Rodriguez via unanimous decision (30-27, 30-27, 29-28)
• Ateba Gautier def. Jose Daniel Medina via knockout (knee) – Round 1, 3:32
• Melquizael Costa def. Christian Rodriguez via unanimous decision (29-28, 29-28, 29-28)
• Loopy Godinez def. Julia Polastri via unanimous decision (29-28, 29-28, 29-28)
• Rafa Garcia def. Vinc Pichel via unanimous decision (30-27, 30-27, 29-28)
• Jamall Emmers def. Gabriel Miranda via TKO (punches) – Round 1, 4:06
• MarQuel Mederos def. Austin Hubbard via split decision (29-28, 28-29, 29-28)

For more on the card, visit MMA Junkie’s event hub for UFC on ESPN 64.