UFC Fight Night: Machida vs. Romero (also known as UFC Fight Night 70) was a mixed martial arts event held on June 27, 2015 at the Seminole Hard Rock Hotel and Casino in Hollywood, Florida.

The event was originally expected to be held at the Ginásio do Ibirapuera in São Paulo, Brazil. However, on May 15, the event was moved to the Seminole Hard Rock Hotel and Casino in Hollywood, Florida.

The fight card was also expected to feature the lightweight and bantamweight finals of The Ultimate Fighter: Brazil 4. This was the first time a Ultimate Fighter Brazil Finale event would be held outside of Brazil. However, as the event approached, several international fighters experienced travel restrictions due to technical issues within the Bureau of Consular Affairs division of the U.S. State Department which produces travel visas. The issue led to a major altering of the card as multiple fights were postponed.

The lightweight and bantamweight finals of The Ultimate Fighter: Brazil 4, was instead contested on August 1, 2015 at UFC 190.

A welterweight bout between Rick Story and Erick Silva was expected to serve as the main event. However, after the initial venue change, the bout was moved to a co-featured slot and the event was headlined by a middleweight bout between former UFC Light Heavyweight champion Lyoto Machida and 2000 Summer Olympics silver medalist in freestyle wrestling Yoel Romero. Also affected by the visa issues, Silva was pulled from the event and his bout against Story was rescheduled for UFC Fight Night: Holloway vs. Oliveira.

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